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STARTER CHAIN GUIDE HELP

Discussion in 'XJ Technical Chat' started by fishhookxj, Oct 5, 2012.

  1. fishhookxj

    fishhookxj Member

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    ON MY 82 XJ750 MAXIMIS THEIR A WAY TO REPLACE MY STARTER CHAIN GUIDE AND MY STARTER CLUTCH WITHOUT SPLITTING THE CASE OR JUST THE CHAIN GUIDE?
     
    fishhookxj, Oct 5, 2012
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  2. razz1969

    razz1969 Active Member

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    You have to remove the crank to get to the chain guide. So splitting the case is a must. Sounds daunting, but really not that bad. One word of advice, heat up the bolt that secures the chain guide. They are pretty soft and they are locked tight in. If you don't you will probably be getting the easy out from your tool chest. (don't ask me how I know ;)
     
    razz1969, Oct 5, 2012
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  3. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    BOTH repairs require splitting the cases.

    WHY NOT start with an oil change to non-synthetic motorcycle oil before you go ripping the motor apart?

    The guide is known to break up, yes; the sprag clutch, while they DO fail, are much more reliable but very susceptible to synthetic or automotive oils.

    A slow or weak starter can cause what appear to be starter clutch issues as can a simply flat battery.

    From your other recent posts I'm not so sure your starter clutch is bad. Replacing the chain guide isn't a bad idea but you might want to wait for it to fail.
     
    bigfitz52, Oct 5, 2012
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  4. fishhookxj

    fishhookxj Member

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    yea it did fail i had to dig out a chunk from the gear today it was stuck in a notch but i was wondering on how to heat up the bolt correctly and what special tools will i need for the job i work at a car dealership im a parts expert not a tech so im new at this rebuild.
     
    fishhookxj, Oct 5, 2012
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  5. adrian1

    adrian1 Active Member

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    A small blow torch should be ok. I'm assuming the factory used Loctite when assembling and you should use same on reassembly. I'm assuming you have a decent manual?
     
    adrian1, Oct 5, 2012
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  6. MN-Maxims

    MN-Maxims St. Paul Minnesota

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    How many miles are on your bike? Also you should put your info in your signature that would be helpfull

    MN
     
    MN-Maxims, Oct 5, 2012
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  7. fishhookxj

    fishhookxj Member

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    ok i will sorrry i am new and i dont have a manual yet im looking a gettin a haynes tomorrow
     
    fishhookxj, Oct 5, 2012
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  8. fishhookxj

    fishhookxj Member

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    miles are unknow no cluster it came broke but i did read 36000 something on it but it doesnt turn anymore
     
    fishhookxj, Oct 5, 2012
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  9. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    DO NOT DO THIS JOB WITH ONLY THE HAYNES.

    Track down a factory manual as well. The Haynes leaves out or only casually mentions/glosses over important reassembly details. If you're not an experienced mechanic some of them might not occur to you or be clearly understandable, and it could cause long-term grief.

    The biggest problem with the factory book is that is assumes you're a trained mechanic.

    For any "deep" work such as this, the best practice is to have both books.
     
    bigfitz52, Oct 6, 2012
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  10. fishhookxj

    fishhookxj Member

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    ok cool i hunt down both as of now im taking your advice to find a engine im not having to much luck but time will tell and then ill rebuild this one so thatnk for the info on the manuals ill grab both so i have a better chance
     
    fishhookxj, Oct 6, 2012
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  11. MN-Maxims

    MN-Maxims St. Paul Minnesota

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    Too bad your so far away, I have a 750 engine with about 23,000 on it.

    MN
     
    MN-Maxims, Oct 6, 2012
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  12. fishhookxj

    fishhookxj Member

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    that wouldve been good i found one real close the guy hasnt got back to me all compression checks out good complete engine with only 12,000ish miles 300$
     
    fishhookxj, Oct 7, 2012
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  13. MN-Maxims

    MN-Maxims St. Paul Minnesota

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    Yea I think I would just go for a good used mill rather than rebuilding one at this point. Keep the old one for parts for sure.

    MN
     
    MN-Maxims, Oct 7, 2012
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  14. fishhookxj

    fishhookxj Member

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    yea i was also thinking of keeping the old one getting both manuals and rebuilding slowly for the experience.
     
    fishhookxj, Oct 8, 2012
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  15. fishhookxj

    fishhookxj Member

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    i need to check and clean my carbs also they are a little rough they seemed to lag a little i have not took them apart yet i beleive they need to be sync and clean
     
    fishhookxj, Oct 8, 2012
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  16. fishhookxj

    fishhookxj Member

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    I ALSO FOUND OUT THE ENIGNE THE GUY HAS IS A 1981 XJ750 WILL THAT MATCH UP?
     
    fishhookxj, Oct 8, 2012
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  17. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    The '81~'83 750 motors were all pretty much the same, unlike the 650s.

    The only obvious mechanical differences are between Seca and Maxim, because of the rear-set shifter on the Seca.
     
    bigfitz52, Oct 8, 2012
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  18. fishhookxj

    fishhookxj Member

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    OK THIS ONE I FOUND IS A MAXIM BUT THE COMPRESSION TEST CAME AT 150,148,148,145 CYLINDER 1 THROUGH 4 IS THAT OK OR DO I NEED TO WATCH THAT?
     
    fishhookxj, Oct 8, 2012
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  19. fishhookxj

    fishhookxj Member

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    THEY ALSO HAVE A 1983 MAXIM 750 HITTING 160,160,160,165
     
    fishhookxj, Oct 8, 2012
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  20. fishhookxj

    fishhookxj Member

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    THE 83 ENGINE IS PACKING ON 32,7579
     
    fishhookxj, Oct 8, 2012
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  21. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    If this is the lower-mileage of the two, I'd go with this one.

    Getting 145~150 is fine; the difference is less than 14psi and those numbers are in the higher end of the range.

    The other motor's numbers are actually a tad high, which can indicate problems as well.
     
    bigfitz52, Oct 8, 2012
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  22. fishhookxj

    fishhookxj Member

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    OK COOL THANK YOU I DIDNT KNOW THAT AT ALL
     
    fishhookxj, Oct 8, 2012
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  23. fishhookxj

    fishhookxj Member

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    I WAS WONDERING I FOUND A NICE 650 COMPLETE THE SAME PRICE AS A 750 ENGINE 300$ ENGINE IS STRONG WILL THE 650 MATCH UPP WITH THE 750 FRAME CAUSE IT HAS ALMOST A WHOLE BIKE FOR THE SAME AS JUST A ENGINE
     
    fishhookxj, Oct 9, 2012
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  24. fishhookxj

    fishhookxj Member

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    and how much of a downgrade is it from the 750 on power and sound
     
    fishhookxj, Oct 9, 2012
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