-
Similar Forum Topics
-
By BuckBilly
I like to ride in wooded and grassy areas. It takes my mind off the everyday routines and helps me deal with my father's cancer. Also gives me a reason to get involved with forums like this one.
-
By P_syko
Hello all! I’m new to the 4 wheeler world, but not new to the mechanic world. I was a diesel mechanic for many years and last year got into jet skis. I just bought a 1987 Yamaha moto 4 350 and now learning the ins and outs of 2 stroke engines. Looking forward to learning all the things.
-
By PIYIRIO
Hi all - I recently had a shop fix this quad and it hasn't been right since. The jug was resealed as it was leaking, the rings were replaced, and the valve stem seals replaced. Shop said the cylinder walls were great so nothing was done there. The motor still smokes, heavily on startup and all but quits once warmed up. Enough that I can live with it if I can fix what I came to ask about. I mentioned this work because since I've gotten it back it seems like it has power but tops out at a much slower speed than before. It's old so I don't have a speedo but I pulled out my phone at it tops out at 25 mph. I know before the work, I was getting up to 45+ mph... It's so bad, my 10 year old daughter is pulling away and straight leaving me in the dust with her governed Polaris 90.
Given the work done, what are some thing I could be the cause of such a drastic difference? I immediately thought timing but the marks appear to match up with a youtube video I found... no idea if it's correct though. It sat in another shop for 2 months and they gave me an $800 quote just for the starter... it pull starts fine.
FYI: I would take it back to the original shop to figure out but I had some issues that make them a no-go for me.
-
By quadcrazy
View File 1985 - 1995 Polaris ATV service manual (All Models)
1985 - 1995 Polaris ATV service manual (All Models)
Covers the following models:
1985 Scrambler Trail Boss
1986 Scrambler
1986 Trail Boss
1986 Scrambler
1986 Trail Boss
1987 Trail Boss
1987 Cyclone
1987 Trail Boss 4x4
1987 Trail Boss 4x4
1987 Trail Boss 4x4
1988 Trail Boss 2x4
1988 Trail Boss 4x4
1988 Trail Boss 250 RIES
1988 Trail Boss 250 RIES
1989 Trail Boss
1989 Trail Boss 2x4
1989 Trail Boss 4x4
1989 Big Boss 4x6
1989 Big Boss 4x6
1990 Trail Blazer
1990 Trail Boss 250
1990 Trail Boss 2x4
1990 Trail Boss 2x4 350L
1990 Trail Boss 4x4
1990 Trail Boss 4x4 350L
1990 Big Boss 4x6
1991 Trail Blazer
1991 Trail Boss 250
1991 Trail Boss 2x4
1991 Trail Boss 2x4 350L
1991 Trail Boss 4x4
1991 Trail Boss 4x4 350L
1991 Big Boss 4x6
1991 Big Boss 6x6
1992 Trail Blazer
1992 Trail Boss 250
1992 Trail Boss 2x4
1992 Trail Boss 2x4 350L
1992 Trail Boss 4x4
1992 Trail Boss 4x4 350L
1992 Big Boss 4x6
1992 Big Boss 6x6
1993 2502x4
1993 3502x4
1993 2504x4
1993 3504x4
1993 Sportsman
1993 2506x6
1993 3506x6
1993 Trail Boss
1993 Trail Blazer
1994 3002x4
1994 4002x4
1994 3004x4
1994 4004x4
1994 3006x6
1994 4006x6
1994 Trail Boss 2W
1994 Trail Blazer 2W
1994 Sportsman 4x4
1994 Sport
1995 3002x4
1995 4002x4
1995 3004x4
1995 Xplorer4x4
1995 4006x6
1995 Trail Boss
1995 Trail Blazer
1995 Sportsman 4x4
1995 Scrambler
1995 Magnum 2x4
1995 Magnum 4x4
1995 Sport
Submitter quadcrazy Submitted 05/24/2018 Category Polaris ATV
-
-
By DaveswMN
Pulled my '86 Moto4 out of shed where it sat for 20 years. I knew it smoked. checked it over a little put in gas and it fired right up!!
Drove about 100 yards, ran about half throttle wouldn't idle. Put on somenew parts, jug/piston and rings, carb and valve seals.
'went together ok, tuned it over by hand about 6 revs whick went well. Hit the starter it fired for about 6 revs and quit. tried it again fired once and then th sound of something slipping like maybe chain slipping over spoket.
Took cover off to watch cam sproket, hit starter again, heard same noise and the cam sproket was not turning but jumping a bit. Chain was still tight. You will probably tell me I need to split the lower case but hoping there mightbe something else.
I don't fully understand the chain tightener, the plunger only moves about 1/4 inch, should it move much more than that when off the motor and compressing it by hand?
Thanks for any thoughts.
-
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.