Friend gave me a 1990 FZR Yamaha 600, needs work he says but not much. He saying it may need the pistons and gas tank cleaned out blues had been sitting uncovered for over a year....questions is I need directions on how to do so.??
SOURCE: my 1991 yamaha fzr 600 has been sitting for three
Any water in the gas? Remove the water trap bowl at the bottom of the petcock, (gas valve). Any water or trash in the bowl? ( not all bikes have a water trap bowl ). Drain all the old gas from the tank. Install an in-line fuel filter. You will need to clean the built up varnish from the evaporated gas out of the carbs.
FOR EACH carb > Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray all the little airways and fittings in the carb. Remove the two screws on the outside throat of the carb and spray into the screw holes as well.
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Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. Balance and sync the carbs.
I strongly suggest you to let the shop take care of the carbs. Cleaning can be a nightmare times four and doing the balancing and sync of the carbs sounds easier than it is. If you do the carb work then be sure you have a fire extinguisher at hand. I am serious about that.
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SOURCE: My FZR 600 is acting up and backfires
I have had several bikes in my time. and keeping the carbs syncranized is very important. Did you put aftermarket pipes on it? try rejeting the carbs up 2+mm that may help the fuel air ratio?
SOURCE: what do I need to buy or what should I do if my
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};Â Technical Specifications 1991-FZR600
Engine
Engine type
Liquid cooled, 4-stroke, forward inclined parallel 4 cylinder, DOHC 16 valves
Displacement
599 cc
Bore x stroke
59.0 x 54.8 mm
Compression ratio
12.0 : 1
Maximum power
66.8 kW (91 HP) @ 10,500 rpm
Maximum torque
65.7 Nm (6.7 kg-m) @ 8,500 rpm
Lubrication system
Wet sump
Fuel System
Mikuni BDST32 x4
Clutch type
Wet, multiple disc
Ignition system
Transistor controlled (digital)
Starter system
Electric
Transmission system
Constant mesh, 6 speed
Primary reduction ratio
1.708
Secundary reduction ratio
3
Final transmission
Chain
Ratios gearbox 1st
2.846
Ratios gearbox 2nd
1.947
Ratios gearbox 3rd
1.55
Ratios gearbox 4th
1.333
Ratios gearbox 5th
1.192
Ratios gearbox 6th
1.111
Chassis
Front suspension system
Telescopic fork
Front wheel travel
130 mm
Rear suspension system
Swingarm (Link suspension)
Rear wheel travel
115 mm
Caster angle
25°
Trail
94 mm
Front brake
Dual discs, ø 298 mm
Rear brake
Single disc, ø 245 mm
Front tyre
110/70V17 V240
Rear tyre
140/60V18 V240
Dimensions
Overall length
2,165 mm
Overall width
700 mm
Overall height
1,155 mm
Seat height
785 mm
Wheelbase
1,425 mm
Minimum ground clearance
135 mm
Dry weight
181 kg
Fuel tank capacity (reserve)
18 L
Engine oil tank capacity
3.1 L
SOURCE: I news to tighten my chain. Never owned a bike
Loosen the Axel castle nut on the Axel and there is a bolt with a nut out the back of the swing arm. Turn the nut in the same amount on both side till the chain has 1/2 inch of movement up and down and tighten the Axel nut to 80 ft pounds.
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