tinkertinker
Seaman
- Joined
- Jun 8, 2007
- Messages
- 50
Howdy. I'm reviving this groovy old 40hp motor for a vintage boat. Getting close! I think Link and Sync is next and I could use a pointer.
I understand that the cam follower should start to move the throttle butterfly when it lines up with the two lines | | on armature gizmo. It ain't clear to me how to adjust it. My factory-ish looking manual does not address the issue.
With motor off and choke off and in fwd gear, the two lines | | pass the cam follower by about an inch before the throttle starts to move.
The cam is attached to the armature base with two slotted screws, not hexes, and does not appear to be adjustable. Def not w/o taking the flywheel off again. So the cam follower must adjust somehow, but I don't see it. Bend the brass linkage (follower to carb) to shorten it? Seems clumsy. I already used up the tiny adjustment in the nylon eccentric that is embedded in the throttle butterfly end of the linkage.
done so far: impeller, lower unit oil, new hoses, coils, points (gapped .020) , new plug wires and boots, rebuilt the carb, rebuilt the fuel pump.
Only real probs I've found was one burnt-looking plug wire at the coil end and a carb float that wasn't adjusted right.
Compression was even at about 93psi before the rebuild. Low, but hope is alive! I did a very quick test run after my round of fixes and have pretty decent idle as it warms up. Starts easily. Above idle, it seems to rev, run smooth and pretty for about 20 seconds, drop in a hole, rev pretty again. It is hard to explain the behavior, but it gets worse at higher RPMs.
Hence Link and Sync. (psst, anyone got a manual with that info for the 35330?) : )
I understand that the cam follower should start to move the throttle butterfly when it lines up with the two lines | | on armature gizmo. It ain't clear to me how to adjust it. My factory-ish looking manual does not address the issue.
With motor off and choke off and in fwd gear, the two lines | | pass the cam follower by about an inch before the throttle starts to move.
The cam is attached to the armature base with two slotted screws, not hexes, and does not appear to be adjustable. Def not w/o taking the flywheel off again. So the cam follower must adjust somehow, but I don't see it. Bend the brass linkage (follower to carb) to shorten it? Seems clumsy. I already used up the tiny adjustment in the nylon eccentric that is embedded in the throttle butterfly end of the linkage.
done so far: impeller, lower unit oil, new hoses, coils, points (gapped .020) , new plug wires and boots, rebuilt the carb, rebuilt the fuel pump.
Only real probs I've found was one burnt-looking plug wire at the coil end and a carb float that wasn't adjusted right.
Compression was even at about 93psi before the rebuild. Low, but hope is alive! I did a very quick test run after my round of fixes and have pretty decent idle as it warms up. Starts easily. Above idle, it seems to rev, run smooth and pretty for about 20 seconds, drop in a hole, rev pretty again. It is hard to explain the behavior, but it gets worse at higher RPMs.
Hence Link and Sync. (psst, anyone got a manual with that info for the 35330?) : )