Yamaha pw 50

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kenny131 · #1 Unread post by **kenny131** » Tue Mar 28, 2006 1:54 pm

Just bought a very used pw 50. Bike runs at idle but won't accelerate. I even took the carb off and squirted gas straight into the intake manifold and it still won't rev up. Compression is good, runs great at idle. What am I missing?? kenny

BuzZz · #2 Unread post by **BuzZz** » Tue Mar 28, 2006 2:19 pm

Clogged or restricted exhaust, maybe. I think they used to come 'restricted' by a washer with a small hole in between the pipe and silencer. When JR. was ready, you took it out and he had the rest of the motor to play with.

kenny131 · #3 Unread post by **kenny131** » Wed Mar 29, 2006 2:26 pm

I took the muffler off and it still has the same problem. kenny

fdesbois · #4 Unread post by **fdesbois** » Sun Apr 16, 2006 6:09 am

Take off the left hand engine cover and look around your flywheel to see if there is any signs of leeking oil. If so remove flywheel and change the seal. If oil is present underneat the flywheel this will cut your revs.

Good Luck

CORSCO · #5 Unread post by **CORSCO** » Thu Apr 27, 2006 7:29 am

CLEAN THE CARB. MAKE SURE RUN SWITCH IS IN RUN POSOTION AND NOT LEFT ON START!

kenny131 · #6 Unread post by **kenny131** » Fri Apr 28, 2006 12:30 am

Ok, thanks for the reply. Does anyone know where to get a wiring diagraphm for a yamaha pw 50 other than buying a manual??? thanks kenny

CORSCO · #7 Unread post by **CORSCO** » Sat Apr 29, 2006 12:16 pm

Ask a local dealer if they can copy one for you...ask the service manager or writer. A easy way to get the "feel" of the service department. We would do it at my shop.