Suzuki Boulevard M50 User Manual

SERVICING INFORMATION 10-11
CHASSIS
Complaint Symptom and possible causes Remedy
Heavy steering 1. Overtightened steering stem nut
2. Broken bearing in steering stem
3. Distorted steering stem
4. Not enough pressure in tires
Adjust.
Replace.
Replace.
Adjust.
Wobbly handlebars 1. Loss of balance between right and left front forks
2. Distorted front fork
3. Distorted front axle or crooked tire
4. Loose steering stem nut
5. Worn or incorrect tire or wrong tire pressure
6. Worn bearing/race in steering stem
Adjust.
Repair or replace.
Replace.
Adjust.
Adjust or replace.
Replace.
Wobbly front wheel 1. Distorted wheel rim
2. Worn front wheel bearings
3. Defective or incorrect tire
4. Loose axle or axle pinch bolt
5. Incorrect front fork oil level
Replace.
Replace.
Replace.
Retighten.
Adjust.
Front suspension
too soft
1. Weakened springs
2. Not enough fork oil
3. Wrong weight fork oil
4. Improperly set front fork spring adjuster
5. Improperly set front fork damping force adjuster
Replace.
Replenish.
Replace.
Adjust.
Adjust.
Front suspension
too stiff
1. Too viscous fork oil
2. Too much fork oil
3. Improperly set front fork spring adjuster
4. Improperly set front fork damping force adjuster
5. Bent front axle
Replace.
Drain excess oil.
Adjust.
Adjust.
Replace.
Noisy front
suspension
1. Not enough fork oil
2. Loose bolts on suspension
Replenish.
Retighten.
Wobbly rear wheel 1. Distorted wheel rim
2. Worn rear wheel bearing or swingarm bearings
3. Defective or incorrect tire
4. Worn swingarm and rear suspension bearings
5. Loose nuts or bolts on rear suspensions
Replace.
Replace.
Replace.
Replace.
Retighten.
Rear suspension
too soft
1. Weakened spring of shock absorber
2. Leakage oil or gas of shock absorber
3. Improperly set rear spring pre-load adjuster
4. Improperly set damping force adjuster
Replace.
Replace.
Adjust.
Adjust.
Rear suspension
too stiff
1. Bent shock absorber shaft
2. Bent swingarm
3. Worn swingarm and rear suspension bearings
4. Improperly set rear spring pre-load adjuster
5. Improperly set damping force adjuster
Replace.
Replace.
Replace.
Adjust.
Adjust.
Noisy rear
suspension
1. Loose nuts or bolts on rear suspension
2. Worn swingarm and suspension bearings
Retighten.
Replace.
SAMPLE

Suzuki Boulevard M50 Specifications

General

Compression Ratio	9.4:1
Fuel System	Fuel injection
Ignition	Electronic ignition (transistorized)
Transmission	5-speed constant mesh
Final Drive	Shaft drive
Front Suspension	Inverted telescopic, coil spring, oil damped
Front Tire	130/90-16M/C 67H, tubeless
Rear Tire	170/80-15M/C 77H, tubeless
Ground Clearance	140 mm (5.5 in)
Seat Height	700 mm (27.6 in)
Engine Type	4-stroke, liquid-cooled, V-twin
Bore x Stroke	83.0 mm x 74.4 mm
Rear Suspension	coil spring, oil damped
Front Brakes	Single hydraulic disc
Rear Brakes	Drum
Fuel Tank Capacity	15.5 L (4.1 US gal)
Wheelbase	1, 655 mm (65.2 in)