1982 Yamaha XJ750 Maxim Clutch issue

I have a 1982 Yamaha XJ750 Maxim that does not want to roll when I pull in the hand clutch. The cable is adjusted out almost as far as it will go and it moves freely. However when I try to roll it with the clutch pulled in it stays in gear. Any ideas what it could be?

 

What do you mean by 'the clutch cable is adjusted out almost as far as it will go'?

The cable should be set per the manual with the correct amount of free play. If memory serves me it is about 1/8".

Was the bike functioning properly prior to this?
Can you start the bike?
Does it shift when you are riding the bike?

 

Free play is the distance between the clutch perch and the handle when the handle is pulled before the clutch is engaged. When the handle is at rest (not being pulled) the free play is 0mm.

Gary H.

Edited for clarity. Thanks Stump.

 

Has the bike been sitting along time? Your clutch plates could be rusted and or damaged. Gas in the oil can cause clutch problems also.

 

Perhaps I am confused - certainly don't want to confuse the OP.
I thought that when you grab the handle that there is a small gap between perch and handle prior to 'engagement' to insure that the cable doesn't have any tension on it when at rest (similar to throttle cable setup).

 

The clutch is about an 1/8th inch out on the adjustment (two threads). Based on your statements I'd say it is the factory settings. The clutch plates appear to be frozen and I know what my first winter project will be.

I just picked up the bike in August. It has been in storage for two years and needs a lot of work. The work order to get up road ready is growing pretty quick.

There has not been any attempt to get it started.

Yes, it has been sitting in storage for a couple years.

 

It's two threads out or about 1/8th inch. From your description it appears to still be the factory setting. Thanks.

 

You are correct. There is supposed to be 3mm of free play at the lever.

 

Exactly. The small gap is the free play. I was saying there is no free play when the handle is at rest. Maybe i shouldn't have said that as not to cause confusion. Thanks.

Gary H.

 

When bikes sit for along time. The clutch is half in oil and the other half is not. This can cause the clutch not to release because the clutch plates get all funky.
Plan on overhauling the clutch for sure. Even if you were to bust it loose it will probably start slipping under load anyway.

 

Great advice and that is definitely part of my plans. Thanks.

 

does the bike run?
if so put it up on center stand add a few ounces of sea foam see if it loosens the gummy crud from the plates.
got a manual? start a conversation with me and i will send you one. its a pdf haynes on a cd

 

The new clutch material is so much better, it makes a world of difference.

 

i agree
but this is a new to him project and he needs to
change oil and filter
Choosing Oil for a Wet Clutch Motorcycle
evaluate the motor with a compression test and valve clearance check and reshim if needed.
remove and clean carbs to the
IN THE CHURCH OF CLEAN standards

see if it will start

before he starts to spend money on
new fuse box
front wheel bearings,
rebuilding calipers, master cylinder
new brake lines
rear break shoes rear wheel bearings
check/replace headstock bearings
new clutch plates
new tires

he should do all the things on this list before spending money as well

clean all electrical connectors
test signal/running lights, tail lights
test coils
test pick ups
ohm out and inspect alternator clean if nessary and check brushes to see if they need replacmentbasicly check out ALL systems on bike before spending a dime.
so he will see how deep his pockets have to be

I would and did buy a battery first to help test wiring
next was glass fuse holder replacment
all while soaking and cleaning carbs and getting a list of parts needed for the carbs

and reading
The Information Overload Hour

a little more light reading
THE SECRET LIFE OF CARBURETORS

Something New, Something Naked

TALKIN' TECH: Various thoughts on various issues

The Ultimate Relay, Switch, Sensor, and Diodes Guide

 

After this is done and it is determined the mill is viable the guesstimate cost is between $600 ~ $800 to complete the road worthy restoration at Xjbikes standards.

Gary H.

 

Thanks, I have both manuals. I appreciate the offer.