I have a WSM and I have air in the fuel line, but it doesn't have actual procedure on how to purge the system. Does anyone have step by step instructions for purging air from the fuel system? The sight glass is full and the knurled knob has fuel flowing but I've been cranking the engine with no results. Joe Bellor
No start on a L5450
- Thread starter jbellor
- Start date
Look in the G section of the workshop manual.
I do not have the exact manual for your model but the early sections of the manual are where you find the routine steps for troubleshooting and maintenance.
This is page G-44 in the manual I have.
Dave
I do not have the exact manual for your model but the early sections of the manual are where you find the routine steps for troubleshooting and maintenance.
This is page G-44 in the manual I have.
Dave
rbargeron
Well-known member
Lifetime Member
Equipment
L5450, L48, L3250, L345 never enough attachments
Over time the L5450's fuel pickup pipe in the tank's bottom cup can get clogged with debris. The tank also has 2 vent lines which will allow air in if the clogging develops too much suction in the pickup pipe.
When my L5450 gets air in the fuel line, I take off the feed line at the filter and give it a brief shot of compressed air, back-flushing the pickup pipe. Access to the pickup pipe at the tank end is essentially impossible without cutting the tank apart - giving it a puff of air at the filter end is much easier.
Years ago when this problem first showed, I noticed there are 2 vent lines on the side of the tank - not sure why. I tried just connecting them to each other, to rely instead on fuel cap's vent. It worked, but the root cause was that the pickup pipe tubing has a sharp edge on the end that had snagged some small fibers, eventually restricting flow. The pipe is under a welded baffle in the cup, so no access.
After puffing it back with air, it should remain free-flowing for months, maybe years. Hope this is useful, Dick B
When my L5450 gets air in the fuel line, I take off the feed line at the filter and give it a brief shot of compressed air, back-flushing the pickup pipe. Access to the pickup pipe at the tank end is essentially impossible without cutting the tank apart - giving it a puff of air at the filter end is much easier.
Years ago when this problem first showed, I noticed there are 2 vent lines on the side of the tank - not sure why. I tried just connecting them to each other, to rely instead on fuel cap's vent. It worked, but the root cause was that the pickup pipe tubing has a sharp edge on the end that had snagged some small fibers, eventually restricting flow. The pipe is under a welded baffle in the cup, so no access.
After puffing it back with air, it should remain free-flowing for months, maybe years. Hope this is useful, Dick B
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