Just to be clear, as westcoaster90 mentioned, when you went through your carb did you hook the metering diaphragm onto the metering lever? If you simply set the diaphragm onto the carb body ( like you do on most carbs) that would cause the saw to run rich.
Nice looking saw btw!!
Yamabond, hondabond, threebond 1194, dirko. There are a few good sealers out there just be sure they're fuel resistant.
When you say the 'dish top', I assume you don't mean the rim that the gasket and diaphragm set on. As a WJ metering lever needs to be set below that rim.
You probably already know all this but I'm just trying to make sure it's not something obvious.
After deleting the base gasket on my '94 and breaking in the new piston/ring, I gave up after 185psi. It was too darn hard to keep the saw still to pull! I've used Motoseal for a while now with great success.1. I was surprised to find that it already had a gasket delete done.... As it was only pulling 155 psi.
After deleting the base gasket on my '94 and breaking in the new piston/ring, I gave up after 185psi. It was too darn hard to keep the saw still to pull! I've used Motoseal for a while now with great success.
The main nozzle in the WJ39 is also a fixed jet. Even with the needles closed it will still flow fuel. Your metering chamber is being overfed by the needle. Most likely causes are gasket/diaphragm mixed up, diaphragm nipple not hooked on metering lever or metering lever not adjusted properly. Anything under 13.6 is rich for a 372. Even The limiter is 13.6 and the whole purpose of the limiter is to keep them from turning to many RPM's because they like to be tuned above that limiter.
If you have the lever set level with the bowl in the bottom of the chamber it is set right. This is not to be confused with the chamber itself. Many carbs have a metering lever set level with the gasket sealing surface of the carb body. If you do that with a WJ39 I'm surprised you could even get it to run. She'd be pretty well dumping fuel into the engine. Post a pic if you get a chance.
yep, that lever's set right. did you remove that welch plug in the chamber? even if you didn't someone else in the past may have. give it a tap in the center flattening it out slightly. that'll tighten up the edges to the carb body then try run the saw again. the saw is pulling unmetered fuel from that chamber somehow.
You have to put them on youtube first.Hmmmmm- video doesn't want to load. I'll have to find other means of loading.
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