Evinrude Yachtwin 9.9 hp slow cranking

[seastream]

Greetings:<br /><br />I have a '86 Yachtwin w/electric start that cranks s l o w or not at all. Yet, it starts/runs fine with 1 or 2 pulls of the manual start rope. I had a bad battery which I replaced with new...same problem. Any ideas?<br /><br />Thanks,

 

[alcan]

Re: Evinrude Yachtwin 9.9 hp slow cranking

You may have to remove the starter motor. disassemble it and clean and oil it. Inspect it for wear.

 

[seastream]

Re: Evinrude Yachtwin 9.9 hp slow cranking

I simply did without the elec start last season. Now that the boat is in drydock and spring is not far off, it's time to tackle the motor. I bought a service manual and now suspect worn brushes. Any idea where I can just buy a replacement starter motor for this engine? I realize we're talking around $100 or more, but it's a bolt on solution...far better than chasing starter parts all over the workbench.<br /><br />Bob

 

[Paul Moir]

Re: Evinrude Yachtwin 9.9 hp slow cranking

Yup. You can get one here. 18-5617, $160 + shipping.<br />The brush kit, 18-5698, is probably a whole lot cheaper.<br /><br />NAPA autoparts should be able to get you these parts too (same part numbers). Your local Johnny/Rude dealer will be able to get you OEM parts (different numbers).

 

[OBJ]

Re: Evinrude Yachtwin 9.9 hp slow cranking

I think yer lookin at about $260 for a new starter seastream. Where as you could pull the starter and replace the cap assembly for around $35. This is off course there is not huge maladies with the starter inards. <br /><br />Polish the commutator and install the new end cap assembly. Just as good as new.<br /><br />End cap assembly part number - 386678. Should be able to order from any Bomby dealer.<br /><br />Good Luck.

 

[rodbolt]

Re: Evinrude Yachtwin 9.9 hp slow cranking

dude<br /> why not trouble shoot the starting system as per your service manual?<br /> the 9.9 had a startswicth and a nuetral switch that carry the full cranking load. doa voltage droptest acrossed allof them before condeming the starter. a planned trouble shooting approach is a lot faster and less frustrating than a leap and a prayer<br /> good luck and keep posting

 

[seastream]

Re: Evinrude Yachtwin 9.9 hp slow cranking

OK, guys, you got it. Since I bought the service manual, I'm gonna start with replacing the brushes first (likely the originals are in there). I also have a part time alternator, there, I suspect the rectifier. The rectifier is about $28, dunno about the starter brushes but they're likely less than $20. Thanks for the advice and encouragment.<br /><br />Bob

 

[OBJ]

Re: Evinrude Yachtwin 9.9 hp slow cranking

Seastream....look in the service manual. There is a ohm meter test in there for the rectifier. Simple to do. May save you the price of a new rectifier.