Hangkai 6hp Outboard Maintenance

[msg4bob]

Bought a used Hangkai 6hp motor (2-cycle, water cooled, upgraded 4 blade prop). I know EFI car motors well but new to carbureted 2-cylinder outboard motors. Looking for some advice on maintenance items and have some questions on additives.

Questions:

1. I believe the 2-cycle motors don’t have oil passages for lubrication; the 4-cylinder do. The oil needs to be added to the fuel which lubricates the piston when it is burned off in combustion. This means there’s no ‘motor oil’ to maintain, correct?
2. Recommended gear oil weight is 80-90 or full 90 (6.6 oz capacity). I see there are ‘marine’ grade gear oil. Is it necessary to go with Marine grade? Note, I do not intend to leave the motor in water. This is used on a Mariner 4 inflatable raft and the engine will be out of water after every trip, which is only a few times a year. Leaning towards Super Tech ‘Marine’ 80-90 ST GEAR QT MAR 80W90 ($6.96 for 1qt)
3. The recommended Spark plug is NGK BR6HS. Anyone use the Autolite Marine/non-marine series of spark plugs? Just curious?
4. Is there any maintenance needed on the carburetor? Take out and clean with carb cleaner?
5. I’m confused about the fuel requirement. The specs sheet says this motor can use unleaded regular gas (87 octane) but I see posts recommending 91 or higher.. Is this necessary?
6. Fuel 25: Engine oil 1 – how do I translate this to gallons??
7. Walmart carries this “Super Tech Multi-Mix 40:1/50:1 2-Cycle Premixed Fuel” on clearance (1qt). Can I use this? It looks like the ratio is higher on the gas side to oil but I’m not sure what ‘unit’ it is measured against. If I do use this, do I use it straight of the canister as in I DON'T need to add gasoline?
8. Walmart carries this “Hyper Tough 2.6 oz Full Synthetic 2-Cycle Oil, Makes 1 Gallon” on clearance (2.6 oz). The label has “50:1/40:1” and “makes 1 gallon”. To meet the motor's ratio of Fuel 25: Engine 1, I would use half a bottle for 1 gallon of gas, correct??
9. What is this "Super Tech Marine Gear Lube 80W-90, 8 oz tube" used for?? To lube the propeller shaft/splines? What else is there to lube?? Is it different than the oil in #2 above?

Attached Spec Sheet:

 

[racerone]

It talks about valve clearance and yet it calls for oil mixed with the gas.----So what is it a 2 stroke or 4 stroke???----Oil mixed with the gas coats the internal parts with oil on aq 2 stroke..----Oil that is --" burning " ---does not lubricate !!----Any pictures of the power head.----Is there an oil dipstick ??----Confucius says I am confused on this one.

 

[msg4bob]

It is a 2 stroke, no dipstick. Why wouldn't it have valve clearance specs? It is still a petrol combustion engine using pistons and piston rings that can be rebuilt.

I should have replaced 'when' with 'then'.

1. I believe the 2-cylinder motors don’t have oil passages for lubrication; the 4-cylinder do. The oil needs to be added to the fuel which lubricates the piston when then it is burned off in combustion. This means there’s no ‘motor oil’ to maintain, correct?

For my ref:
How the 2-Stroke Engine & Carburetor Work Together!

 

[racerone]

The spec sheet mentions valve clearance.----Intake and exhaust valve.----As far as I know there are no intake and exhaust valves on a 2 stroke.--Reed valves on a 2 stroke that are maintenance free.------Did you intend to say 2 stroke and 4 stroke instead of 2 cylinder and 4 cylinder ?

 

[msg4bob]

The spec sheet mentions valve clearance.----Intake and exhaust valve.----As far as I know there are no intake and exhaust valves on a 2 stroke.--Reed valves on a 2 stroke that are maintenance free.------Did you intend to say 2 stroke and 4 stroke instead of 2 cylinder and 4 cylinder ?

(Insert Homer) DOH!
You are right, I meant 2 stroke (or cycle) but saying/using cylinder instead!...
Report to mods to see if I can edit this to avoid future confusion.


Not sure about the valve clearance specs for IN vs EX specs. Hope someone can chime in.

 

[racerone]

The manual indicates to me / mentions that this is a 4 stroke motor.-----It is up to you to determine what you have.----Do not start this motor until you are absolutely sure what style engine this is !!

 

[jbcurt00]

Owners manuals are copyrighted, and prohibited

Manual removed

 

[matt167]

Hangkai engines that look ‘real’ are straight up copies of Yamaha motors. The 6hp is probably one of them, but they do have one that is basically a weed wacker engine that they rate at 6hp too.

The fact your going to put this on an intex inflatable rated for 1.5hp is scary.

 

[That old Mercury]

Bought a used Hangkai 6hp motor (2-cycle, water cooled, upgraded 4 blade prop). I know EFI car motors well but new to carbureted 2-cylinder outboard motors. Looking for some advice on maintenance items and have some questions on additives.

Questions:

1. I believe the 2-cycle motors don’t have oil passages for lubrication; the 4-cylinder do. The oil needs to be added to the fuel which lubricates the piston when it is burned off in combustion. This means there’s no ‘motor oil’ to maintain, correct?
2. Recommended gear oil weight is 80-90 or full 90 (6.6 oz capacity). I see there are ‘marine’ grade gear oil. Is it necessary to go with Marine grade? Note, I do not intend to leave the motor in water. This is used on a Mariner 4 inflatable raft and the engine will be out of water after every trip, which is only a few times a year. Leaning towards Super Tech ‘Marine’ 80-90 ST GEAR QT MAR 80W90 ($6.96 for 1qt)
3. The recommended Spark plug is NGK BR6HS. Anyone use the Autolite Marine/non-marine series of spark plugs? Just curious?
4. Is there any maintenance needed on the carburetor? Take out and clean with carb cleaner?
5. I’m confused about the fuel requirement. The specs sheet says this motor can use unleaded regular gas (87 octane) but I see posts recommending 91 or higher.. Is this necessary?
6. Fuel 25: Engine oil 1 – how do I translate this to gallons??
7. Walmart carries this “Super Tech Multi-Mix 40:1/50:1 2-Cycle Premixed Fuel” on clearance (1qt). Can I use this? It looks like the ratio is higher on the gas side to oil but I’m not sure what ‘unit’ it is measured against. If I do use this, do I use it straight of the canister as in I DON'T need to add gasoline?
8. Walmart carries this “Hyper Tough 2.6 oz Full Synthetic 2-Cycle Oil, Makes 1 Gallon” on clearance (2.6 oz). The label has “50:1/40:1” and “makes 1 gallon”. To meet the motor's ratio of Fuel 25: Engine 1, I would use half a bottle for 1 gallon of gas, correct??
9. What is this "Super Tech Marine Gear Lube 80W-90, 8 oz tube" used for?? To lube the propeller shaft/splines? What else is there to lube?? Is it different than the oil in #2 above?

Attached Spec Sheet:

Just an opinion
I bought mine new 6 hp ,2 stroke
Manual says 40:1 for beakin then 50:1 oil mix.
I have saw where they reccomend mixing oil with gas for the 4 stoke breakin period.
I used auto store 80/90 wt gear oil.
Manual reccomends changing it every 100 hours.
I always run pennzoil synthetic 2 stoke oil on all my motors so i used that.
Gas octane they reccomend 91 but i use 87 and somtimes blend in some higher octane.
I would reccomend some fuel stabilizer all the time and every 3 tank fulls something like sea foam to help keep gunk out of carb and remove carbon deposits.
I also added a switch to turn off mine. It only came with a kill lanyard or i had to pull out choke to shut it off. Got tired of hooking lanyard clip up.
Other than it cranks first pull .
If you pull starter rope and hear a clicking noise take it out of gear !

 

[That old Mercury]

Hangkai engines that look ‘real’ are straight up copies of Yamaha motors. The 6hp is probably one of them, but they do have one that is basically a weed wacker engine that they rate at 6hp too.

The fact your going to put this on an intex inflatable rated for 1.5hp is scary.

I dont think the 6 hp one i have is any where near 6 hp. On my boat with gps max speed is 3.5 mph .
The 8 hp Mercury would push it 10.5 mph , thats a lot of difference for 2 hp!

 

[msg4bob]

Just an opinion
I bought mine new 6 hp ,2 stroke
Manual says 40:1 for beakin then 50:1 oil mix.
I have saw where they reccomend mixing oil with gas for the 4 stoke breakin period.
I used auto store 80/90 wt gear oil.
Manual reccomends changing it every 100 hours.
I always run pennzoil synthetic 2 stoke oil on all my motors so i used that.
Gas octane they reccomend 91 but i use 87 and somtimes blend in some higher octane.
I would reccomend some fuel stabilizer all the time and every 3 tank fulls something like sea foam to help keep gunk out of carb and remove carbon deposits.
I also added a switch to turn off mine. It only came with a kill lanyard or i had to pull out choke to shut it off. Got tired of hooking lanyard clip up.
Other than it cranks first pull .
If you pull starter rope and hear a clicking noise take it out of gear !

50:1 is vastly different from the 25:1 (double the parts of oil per unit of gas). 50:1 sounds like it would burn cleaner but with less oil protection. I will err on safety and go with 91 as well.
I am a BIG Amsoil fan but Walmart had Super Tech 'Full Synthetic' 2 cycle on clearance so I grabbed a bunch (ok, all) @.75 each .
Review of 2-stroke ST 'conventional' oil vs Amsoil

Good to know I can reuse my left over auto gear oil! So I don't need to worry about need a "marine" grade oil?

Do you know if your Hangkai come with unused external lighting coil plugs (Yamaha do) or if anyone successfully added a regulator/rectifier to the CDI to power 12V accessories?

New item for running maintenance list: run seafoam to clean out the carbon build up.

Hangkai engines that look ‘real’ are straight up copies of Yamaha motors. The 6hp is probably one of them, but they do have one that is basically a weed wacker engine that they rate at 6hp too.

The fact your going to put this on an intex inflatable rated for 1.5hp is scary.

Internet hearsay: I've read that it is more likely in the 4-5hp range and a Yamaha(?) clone since the Hangkai is only 102cc. I plan to build appropriate floor and transom mount. There are videos of 15hp Mercury running on this SIB, but I start to question the durability of the underside/seams against the water pressure.

 

[That old Mercury]

50:1 is vastly different from the 25:1 (double the parts of oil per unit of gas). 50:1 sounds like it would burn cleaner but with less oil protection. I will err on safety and go with 91 as well.
I am a BIG Amsoil fan but Walmart had Super Tech 'Full Synthetic' 2 cycle on clearance so I grabbed a bunch (ok, all) @.75 each .
Review of 2-stroke ST 'conventional' oil vs Amsoil

Good to know I can reuse my left over auto gear oil! So I don't need to worry about need a "marine" grade oil?

Do you know if your Hangkai come with unused external lighting coil plugs (Yamaha do) or if anyone successfully added a regulator/rectifier to the CDI to power 12V accessories?

New item for running maintenance list: run seafoam to clean out the carbon build up.


Internet hearsay: I've read that it is more likely in the 4-5hp range and a Yamaha(?) clone since the Hangkai is only 102cc. I plan to build appropriate floor and transom mount. There are videos of 15hp Mercury running on this SIB, but I start to question the durability of the underside/seams against the water pressure.

One question
Did you confirm 2 stoke or 4 stroke?
4 stroke for a 6 hp will have a muffler like a lawn mower and No forward or reverse shifter . You have to rotate motor 180 to back up.
The 6.5 ,4 stroke will have a shifter and be water cooled. From what i tell from all the new ones anyway.
My 2 stroke 6hp came with an extra water pump impellor and a pull rope, spark plug wrench.
If you run 40:1 oil mix buy a lot of sparkplugs , You will need them!
When i did the break in with 40:1 it did not have any power and fouled the spark plug several times.
Finding parts from hangkai has been impossible for me and i dont know about the parts you are looking for.
Just do an internet search for 6 hp hangkia and click on the one that starts with Ama and ends in prime .
Pick out your motor and it gives oil mix ratio.
I did not spell out the website because i dont know if thats allowed or not here.

 

[That old Mercury]

Bought a used Hangkai 6hp motor (2-cycle, water cooled, upgraded 4 blade prop). I know EFI car motors well but new to carbureted 2-cylinder outboard motors. Looking for some advice on maintenance items and have some questions on additives.

Questions:

1. I believe the 2-cycle motors don’t have oil passages for lubrication; the 4-cylinder do. The oil needs to be added to the fuel which lubricates the piston when it is burned off in combustion. This means there’s no ‘motor oil’ to maintain, correct?
2. Recommended gear oil weight is 80-90 or full 90 (6.6 oz capacity). I see there are ‘marine’ grade gear oil. Is it necessary to go with Marine grade? Note, I do not intend to leave the motor in water. This is used on a Mariner 4 inflatable raft and the engine will be out of water after every trip, which is only a few times a year. Leaning towards Super Tech ‘Marine’ 80-90 ST GEAR QT MAR 80W90 ($6.96 for 1qt)
3. The recommended Spark plug is NGK BR6HS. Anyone use the Autolite Marine/non-marine series of spark plugs? Just curious?
4. Is there any maintenance needed on the carburetor? Take out and clean with carb cleaner?
5. I’m confused about the fuel requirement. The specs sheet says this motor can use unleaded regular gas (87 octane) but I see posts recommending 91 or higher.. Is this necessary?
6. Fuel 25: Engine oil 1 – how do I translate this to gallons??
7. Walmart carries this “Super Tech Multi-Mix 40:1/50:1 2-Cycle Premixed Fuel” on clearance (1qt). Can I use this? It looks like the ratio is higher on the gas side to oil but I’m not sure what ‘unit’ it is measured against. If I do use this, do I use it straight of the canister as in I DON'T need to add gasoline?
8. Walmart carries this “Hyper Tough 2.6 oz Full Synthetic 2-Cycle Oil, Makes 1 Gallon” on clearance (2.6 oz). The label has “50:1/40:1” and “makes 1 gallon”. To meet the motor's ratio of Fuel 25: Engine 1, I would use half a bottle for 1 gallon of gas, correct??
9. What is this "Super Tech Marine Gear Lube 80W-90, 8 oz tube" used for?? To lube the propeller shaft/splines? What else is there to lube?? Is it different than the oil in #2 above?

Attached Spec Sheet:

Looked at my manual my 6 hp two stroke says spark plug Ngk E7TC
Gap .9 to 1 mm
One page says break in oil mixture 25:1 a flyer page that came with the book says 30:1 then after the 8 hour break in 50:1 .
I came up with 40:1 i think from online or on the jug they sent for break in.
The manual is funny

 

[matt167]

50:1 is vastly different from the 25:1 (double the parts of oil per unit of gas). 50:1 sounds like it would burn cleaner but with less oil protection. I will err on safety and go with 91 as well.
I am a BIG Amsoil fan but Walmart had Super Tech 'Full Synthetic' 2 cycle on clearance so I grabbed a bunch (ok, all) @.75 each .
Review of 2-stroke ST 'conventional' oil vs Amsoil

Good to know I can reuse my left over auto gear oil! So I don't need to worry about need a "marine" grade oil?

Do you know if your Hangkai come with unused external lighting coil plugs (Yamaha do) or if anyone successfully added a regulator/rectifier to the CDI to power 12V accessories?

New item for running maintenance list: run seafoam to clean out the carbon build up.


Internet hearsay: I've read that it is more likely in the 4-5hp range and a Yamaha(?) clone since the Hangkai is only 102cc. I plan to build appropriate floor and transom mount. There are videos of 15hp Mercury running on this SIB, but I start to question the durability of the underside/seams against the water pressure.

I ran a 3.5hp Hangkai on a seahawk 3 using their optional transom. It did work but it was sketchy.. make no mistake, they are just pool toys

 

[msg4bob]

Looked at my manual my 6 hp two stroke says spark plug Ngk E7TC
Gap .9 to 1 mm
One page says break in oil mixture 25:1 a flyer page that came with the book says 30:1 then after the 8 hour break in 50:1 .
I came up with 40:1 i think from online or on the jug they sent for break in.
The manual is funny

Thanks for your input. I think I am going to follow specs from your manual! They sound more reasonable/logically to me.

It has a sticker/label “TWO STROKE”.. that alone should add the missing hp (does this not apply in the marine world?).
It seems Hangkai’s OM tries to summarize multiple iteration of this motor into one manual, hence the confusion? OR, I’m looking at a completely WRONG OM. Note, I did get the manual from a seller, which host the OM…

 

[msg4bob]

I ran a 3.5hp Hangkai on a seahawk 3 using their optional transom. It did work but it was sketchy.. make no mistake, they are just pool toys

There is your weak link. The Intext mount is really ONLY for electric trolling motors or a feather weight/low power outboard. The 4 mounting points rests on the inflatable tube, which naturally flexes. Extend/Tie it to a hard floor and you should feel a world of difference. The more power/torque, the more it pushes into the tube, and since the mounting points are essentially floating top and bottom points, the outboard would tend to sink into negative trim with more throttle.

I’m sad to say does look like a weedwhacker engine . I’ve read a bit into RIB vs SIB. While this is a little more capable than a pool toy, all I want is a lake/river toy

This setup is my inspiration. If I feel comfortable with the boat's durability, I am temped to 'upgrade'.

Adriano Domingos

Share your videos with friends, family, and the world

www.youtube.com

 

[matt167]

There is your weak link. The Intext mount is really ONLY for electric trolling motors or a feather weight/low power outboard. The 4 mounting points rests on the inflatable tube, which naturally flexes. Extend/Tie it to a hard floor and you should feel a world of difference. The more power/torque, the more it pushes into the tube, and since the mounting points are essentially floating top and bottom points, the outboard would tend to sink into negative trim with more throttle.

I’m sad to say does look like a weedwhacker engine . I’ve read a bit into RIB vs SIB. While this is a little more capable than a pool toy, all I want is a lake/river toy

This setup is my inspiration. If I feel comfortable with the boat's durability, I am temped to 'upgrade'.

Adriano Domingos

Share your videos with friends, family, and the world

www.youtube.com

Keep in mind that the USCG rating of any of the Intex inflatables is 1.5hp. The 3.5hp Hangkai was really only 1.5hp which is why I was okay using it. I lengthened the brackets like everyone said to do and it would still pull the power head down

 

[That old Mercury]

Thanks for your input. I think I am going to follow specs from your manual! They sound more reasonable/logically to me.

It has a sticker/label “TWO STROKE”.. that alone should add the missing hp (does this not apply in the marine world?).
It seems Hangkai’s OM tries to summarize multiple iteration of this motor into one manual, hence the confusion? OR, I’m looking at a completely WRONG OM. Note, I did get the manual from a seller, which host the OM…

Like i said in my first post My opinion only!
Do what you feel is right for you.
From the reviews i looked at before my purchase and videos if you are running it in saltwater put multiple coats of clear coat starting from below the motor to the bottom of the skeg. The motor only has black paint on it and it will corrode and the paint will fall off.
Plus if you keep it out in the sun constantly keep a cover on it because the rubber parts break down and get brittle, they must not have used any uv protectant in the parts. I plan to clear coat my whole motor, just havent got to it
I have the clear coat just been lazy.
Just tape over the water inlet on the foot first.
I dont reccomend anyone buying one , but i have ran mine a lot , its 8 months old i think and does fine for trolling on my 17' cc .
Cranks every pull , trolling speed is what i wanted .9 to 1.5 mph and its got me back to the boat ramp several times when my main motor had issues.
Parts are the only problem for me !
Hangkai would not sell me the fitting for external fuel tank.
They will only sell the tank hose and fitting as one unit and they wanted $250.
I only paid at the time of purchase $250 for the brand new motor plus $75 shipping.
So i use a 500 cc syringe to pull gas out my main tank and fill the hangkai tank.
Good luck with it!

 

[msg4bob]

Like i said in my first post My opinion only!
Do what you feel is right for you.
From the reviews i looked at before my purchase and videos if you are running it in saltwater put multiple coats of clear coat starting from below the motor to the bottom of the skeg. The motor only has black paint on it and it will corrode and the paint will fall off.
Plus if you keep it out in the sun constantly keep a cover on it because the rubber parts break down and get brittle, they must not have used any uv protectant in the parts. I plan to clear coat my whole motor, just havent got to it
I have the clear coat just been lazy.
Just tape over the water inlet on the foot first.
I dont reccomend anyone buying one , but i have ran mine a lot , its 8 months old i think and does fine for trolling on my 17' cc .
Cranks every pull , trolling speed is what i wanted .9 to 1.5 mph and its got me back to the boat ramp several times when my main motor had issues.
Parts are the only problem for me !
Hangkai would not sell me the fitting for external fuel tank.
They will only sell the tank hose and fitting as one unit and they wanted $250.
I only paid at the time of purchase $250 for the brand new motor plus $75 shipping.
So i use a 500 cc syringe to pull gas out my main tank and fill the hangkai tank.
Good luck with it!

-No salt, just lakes mostly and used a handful of times a year. Happy to hear it starts easily!!
-WOW! Where did you find it for $325 (shipped)! I would have considered new but found they were goin for ~$500 (shipped).
-You called out the Hangkai is a Yamaha clone. I doubt they took the time to engineer and developed their own fuel line connection. As such, you can find the Yamaha equivalent external tank and compare the fittings. Once confirmed, you can then find fuel line connector online for Yamaha and fit that to the Hangkai (I don't plan to use external tank but may keep spare 1 or 2 gallon canister. Not familiar with how fast this motor goes through fuel.

https://www.aliexpress.us/item/2251832567765160.html?gatewayAdapt=glo2usa4itemAdapt

This may be helpful for future refence or just search "Hangkia 2 stoke + part" and you'll find it.
HANGKAI Outboards Original Parts for Hangkai 4-stroke 6.5 HP Outboard Parts Boat Engine Propeller Spark Plug Crankshaft Gear

 

[msg4bob]

Keep in mind that the USCG rating of any of the Intex inflatables is 1.5hp. The 3.5hp Hangkai was really only 1.5hp which is why I was okay using it. I lengthened the brackets like everyone said to do and it would still pull the power head down

I think of all ratings as lowest common denominator for safety, like a car's tow rating. I am fairly confident this PVC raft (more than a toy but not quite a boat) can take a few more horses. I would not rely on the Intext motor mount or the factory mounting points; I firmly believe they were engineered for trolling motors (protrudes far out, which adds leverage and the transom block is quite low). We are a bit off topic of engine maintenance but here are my thoughts regarding the mount.

MSG4BOB Mariner 4 Build Thread

Hello. There isn’t much of an online community (busy fishing!) on the Intext Mariner 4 SIB but this seems like the best place. Hoping to use this thread to document my Mariner 4 build with ideas and questions. I consider myself a shadetree mechanic and enjoy tearing into anything mechanical...

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