How can I disable PW50 rev limiter ?

Joined
Dec 31, 2001
Messages
25
Likes
0
#1
Can somebody tell how the rev limiter can be disabled in '86 (or'87) model Yamaha PW50? Is it just by cutting some wires or what?
 

stu182

Subscriber
Joined
Dec 11, 1999
Messages
90
Likes
0
#2
First check the pipe where it goes into the engine. They come stock with a spacer the reduces power remove it if it's in there. There really ins't a rev limiter on the pw other than the screw in the throttle. You can gain a few rpm by disconnecting the start/run switch. Simple as unpluging the wires that run from the killk switch. Not sure which ones.
 

Jasle

Sponsoring Member
Joined
Nov 27, 2001
Messages
1,358
Likes
0
#3
on a newer bike there is a plug that only has the 2 wires that go to the start run portion of the switch. Not sure which ones it is on the older bikes. you can simply trace the off wire that grounds the ignition and clip the other 2 wires. This will make the bike start no matter which posistion the switch is in, either start or run. The bike will still die when switched to off. This disables the retard function of the ignition givving a few more revs up top. slightly noticable on the top end.
 

Jasle

Sponsoring Member
Joined
Nov 27, 2001
Messages
1,358
Likes
0
#5
had another guy mention that the rev limiter is a black item resembling a diode under the seat. I never checked udner there on the older bikes. apparently it has a connecter there you can disconnect and do the same thing as the newer bikes up near the bars. So look for it under the seat.