I guess my question now is about throttle response on a four stroke versus the two stroke. After the ultrasonic cleaning it runs very well but does not have the immediate response the 2 stroke has. It seems to be a slower throttle response. This is my first 4 stroke so I am unaware of the...
A heated ultrasonic cleaner has been used to clean this carburetor and it is much better now. It will not give the burst of a two-stroke but that may be the nature of a four stroke. Any insight on a carbureted four stroke would be greatly appreciated.Runs great except for a fast hole shot.
My guess is the tilt cylinder is bad since the fluid pump is out of the top of the cylinder. On this particular model it is tilt only and no trim. It will not trim while under power.
I am looking for a repair kit for a C40 tilt unit. This unit is tilt only no trim. If anyone has any idea let me know. I have tried online and can’t seem to find one.
They were disassembled and placed in a cleaning solution for 30 min. All openings blown through with compressed air and a small tip cleaner run the openings and then rinsed .
Motor sat on garage floor for 18 Mos. Before I purchased it from someone I know. I cleaned carbs, replaced fuel line and bulb and have fresh gas. Motor will start and run at idle. If you increase the throttle it will sputter and die. While running I can spray gas into carb while increasing...
I am doing a water pump change on a 1992 CV40 and unsure of the rubber grommet location where the housing fits on the water tube. Most of my experience is with OMC motors and I know them. When I removed a the water pump housing the grommet was on the inside of the housing in the water tube slot...
Bosco99 there are 2 black wires that comes from the relay that are connected to the hot lug on the starter. Those 2 wires and the up/down wires have continuity. There are 2 red wires coming from the relay that go to the hot side of the starter solenoid. There is a black and a white wire From the...
I will take a look at that first thing tomorrow. There is a covered junction box on the right side of the motor that may hold a clue. I am not very familiar with Yamaha wiring as everything else I own is OMC.
I recently purchased a used pontoon boat with a 1997 40 hp 2 stroke on it. The t&t switch when pressed in the up position will make the starter motor turn. The starter won’t engage because there isn’t enough power to run both motors I presume. The tilt motor will run for a second and then stop...
Can I use a newer style fuel pump on this motor. This style is getting a bit hard to find and descriptions on eBay are sometimes vague. I can fabricate a bracket if the newer style will work.
