1983 XJ750J (Maxim)

What steps must be taken before starting a 1983 xj750 setting unused for 10 years?

 

check oil level see if it is overfull may have fuel in it. drain and change oil and filter.
remove air filter see if any critters have made a nest in it. clean up after them make sure any nest matrial has not gone down stream

drain any fuel in tank look for rust. add a fuel filter.

carbs will need to be cleaned as they may be gummed up and clogged

you could try to start with starter fluid.

you should ohm out the ignition system to see if it is in spec
ohm out the charging system to see if it is in specyou will find specs here
The Ultimate Relay, Switch, Sensor, and Diodes Guide


check valve clearances to see if in spec
Bigfitz's AIRHEAD VALVE ADJUSTMENT with Pics - parts I & II
after bike starts
rebuild entire brake system
SAFETY ALERT Drum rear brake bike owners please take a look
check and lube/replace wheel bearings

then you will want to drain and replace fork oil.

just a note a 1983 xj 750 is an XJ750K your avatar photo looks like an 83 round speedo face and tubular bars

an XJ750J is an 82
do you have an atari cluster or round speedo and tach

just to be sure check vin on frame and motor
TECH TOPIC: Model ID and VIN's
proper id of bike is first critical step



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XJ550H, Thanks. I did notice the cluster and bars in the "J" suffix manual don't match my round ones. Going out to get all the #'s from the bike. Then look for the "K" suffix manual on this site.
Oh and thanks k-moe and XJ550H for the links. so much easier than searching Google and YouTube! I love this shit!

 

VIN check link verified everything is correct. But, no J or K suffix letter.
Copied and pasted this from the site: "22R00 = 1983 XJ750 Maxim USA".
Should I assume your Suffix letter "K" is correct?

 

Yes.
TECH TOPIC: Model ID and VIN's

"COUNTRY: USA

MODEL NAME: XJ750K
STREET NAME: 1983 XJ750 Maxim
MODEL ID CODE: 22R
FRAME ID: 22R
SERIAL NUMBER STARTS AT: 000101

USA MSRP PRICE: $ 3,299.00"

The K suffix on the model name denotes a machine produced for the 1983 model year.

"In naming their bikes, Yamaha would refer to bikes by their MODEL NAME (i.e. XJ550, XJ650, etc.) and then add a---you guessed it---a LETTER CODE to the end of the model name, as such:

XJ550H
XJ750J
XJ900RK

Unfortunately, the letter codes used in this manner bear no relation to the letter codes used in the 17-position VIN schemes.

Here's the Yamaha letter codes:

A = 1974
B = 1975
C = 1976
D = 1977
E = 1978
F = 1979
G = 1980
H = 1981
J = 1982
K = 1983
L = 1984
N = 1985
S = 1986"

 

Got it. I now have the correct manual. It is the XJ750K-MK-ML service manual.
I will update my signature. Specifically, "XJ750K" (Maxim).