Were do i find the colour code for 1998 xvz 1300

SOURCE: 1996 Yamaha Royal Star XVZ 1300 oil clutch

10w40 or 10w 50. Either will do fine.

SOURCE: would like to know the gas tank capacity for a

YAMAHA ROYAL STAR Engine Type: 1294cc liquid cooled 70 degree DOHC V-four, four valves per cylinder
Bore and Stroke: 79 x 66mm
Compression Ratio: 10.1:1
Carburetor: 4 x 28mm Mikuni CV
Transmission: 5-speed
Wheelbase: 66.7 in.
Dry Weight: 701 lbs.
Tires: Front; 150/80V16 Rear; 150/90V15
Forks: 43mm Kayaba
Rear Suspension: Kayaba mono-shock with adjustable preload
Brakes: 298mm dual front discs with dual-piston calipers; 320mm rear disc with dual-piston calipers
Seat Height: 28.3 in.
Fuel Capacity: 4.8 gallons

SOURCE: need wiring diagram for 87 yamaha XVZ 1300

you can get a wiring schematic at bikebandit.com

SOURCE: how many quarts of oil for a 96 xvz 1300,

The engine, with filter change, is reputed to hold 3.6 (u.s.) quarts. Add 3.5 and check the level - it's probably between the marks. DO NOT OVERFILL, run it a little low of full if you're not patient enough to recheck the level after you've dribbled a few drops in.

If you want a substitute filter, the following FAR exceed the stock in filter effectiveness:
Purolator Pure One PL 14610 - best filter available for that application
Bosch 3323 - close second
Mobil-1 M1-110 - almost the same as Bosch

If you just want the same filter as a Yamaha, get a Walmart Super Tech ST6607, the same as a Yamaha (Toyo Roki) for less than $3.

SOURCE: Hi I have an xvz 1300 , hasa hi pitch noise

Unfortunately, you can get noise from the transmission, clutch basket, drive shaft, pinion gears or rear wheel on the Royal Star. No way to tell which you have so:

Barring a failure of the clutch, a change to a multi-grade synthetic oil THAT DOES NOT HAVE AN ENERGY-CONSERVING SEAL ON THE BOTTLE will quiet (but not necessarily eliminate) gear and clutch noise. Energy-conserving oils tend to make a wet clutch slip. Try Shell Rotella-T (T6) synthetic, available at Walmart for about $19.00 a gallon. Broken clutch springs and bent or warped clutch and friction plates can also be noisy, but that is typically experienced across the whole speed range; fixing a problem like that would involve replacement of the clutch assembly. The transmission gears are straight-cut for strength, and tend to be noisier than bevel-cut gears, still, if the noise remains annoying after an oil change, have the dealer or, better yet, a veteran Royal Star rider, evaluate the noise to see if it is excessive.

The drive shaft on the Royal Star can also make noise if both ends are not properly lubricated; tourers have found that Honda Moly 60 paste on both ends at about 15,000 mile intervals will eliminate that aggravation.

Hypoid gears in the final drive can also be noisy. Short of having the drive disassembled and replacement shims installed, changing to a good synthetic 75W-140 lubricant will quiet or eliminate the whine.

Splines and pins in the final drive and rear wheel assembly can also cause noise. Remove the rear wheel, put a thin layer of Honda Moly 60 paste on the pins, dampers and in the drive spline, ditto with the mating spline on the final drive. I relubricate all of these every time I change rear tires, probably more often than necessary, but it's convenient to do when the wheel is off.