SkwerI
Treehouser
Bill asked me to look at his 372xp because he said it wouldn't idle. I immediately noticed several other issues and thought I would start a thread for suggestions and solutions. The saw is a bit older but has good compression.
The first thing I noticed was that everything on the saw was covered woti an oily film except the bar and chain, and the oil tank was bone dry. Seems the adjustment screw on the oil pump either fell out or was broken off. I've never had one out, so I don't know if they just screw out or if there is a stop. Regardless, that would explain the oil everywhere. I blew off some of it but fully cleaning the saw would be an hour or more and I'm not going that far for a freebie analysis.
I also found parts of the blue kill switch wire stuffed in the cooling fins. One of mine did the same thing a couple months ago when the starter rope shredded and snagged the kill switch wire as well as the plug wire. The flywheel has been rubbing somewhere, I checked clearance on the coil and reset it. One of the screws was a little loose.
Plug looks good. The screw on contact cap on top was loose so I snugged that down. Gap was correct.
I believe the low end jet on the carb is completely plugged. It runs well at WOT but as soon as I let off the throttle the speed only drops slightly, then after about a second or two it dies completely.
Fuel line, impulse line and fuel pickup have been replaced. I'm not thrilled with the fuel pickup (looks like something for a 20cc weed wacker) and the fuel line in the tank is just straight line, not the coiled line like the OEM setup to help keep the pickup in the bottom of the tank. Regardless of that, the fuel tank is almost full so that isn't part of the immediate issue.
I haven't pulled the carb yet. This saw has different size allen screws attaching the carb and my allen wrench set is on the bucket truck. I'll do a general cleaning/disassembly of the carb but not sure exactly where to look to find the other end of the low speed jet and unblock it.
Also, any suggestions on the oiler (other than the obvious replacement) would be welcomed. The saw isn't suitable for use otherwise.
The first thing I noticed was that everything on the saw was covered woti an oily film except the bar and chain, and the oil tank was bone dry. Seems the adjustment screw on the oil pump either fell out or was broken off. I've never had one out, so I don't know if they just screw out or if there is a stop. Regardless, that would explain the oil everywhere. I blew off some of it but fully cleaning the saw would be an hour or more and I'm not going that far for a freebie analysis.
I also found parts of the blue kill switch wire stuffed in the cooling fins. One of mine did the same thing a couple months ago when the starter rope shredded and snagged the kill switch wire as well as the plug wire. The flywheel has been rubbing somewhere, I checked clearance on the coil and reset it. One of the screws was a little loose.
Plug looks good. The screw on contact cap on top was loose so I snugged that down. Gap was correct.
I believe the low end jet on the carb is completely plugged. It runs well at WOT but as soon as I let off the throttle the speed only drops slightly, then after about a second or two it dies completely.
Fuel line, impulse line and fuel pickup have been replaced. I'm not thrilled with the fuel pickup (looks like something for a 20cc weed wacker) and the fuel line in the tank is just straight line, not the coiled line like the OEM setup to help keep the pickup in the bottom of the tank. Regardless of that, the fuel tank is almost full so that isn't part of the immediate issue.
I haven't pulled the carb yet. This saw has different size allen screws attaching the carb and my allen wrench set is on the bucket truck. I'll do a general cleaning/disassembly of the carb but not sure exactly where to look to find the other end of the low speed jet and unblock it.
Also, any suggestions on the oiler (other than the obvious replacement) would be welcomed. The saw isn't suitable for use otherwise.