Suzuki - GS 550 DB 77

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Bike Info

CC:
550
Bike Description:
Almost bulletproof engine - thanks to roller bearing crank and mains that almost never wear out. Massively over-engineered means it will put up with a lot of abuse! Twin cam engine is easy to maintain properly though - now these bikes (the ones that are left!) are becoming a bit more elderly, they will appreciate a bit of tender care!! Most rebuilds will use pattern gaskets - beware the rubber cam chain tunnel seal - non-standard ones dont quite fit, and become trapped - and squashed - when you bolt down the cylinder head - this leads to an annoying oil leak between exhaust pipes 2 and 3. The GS550DB has a single front disc brake (although the fork legs have lugs on to accept a caliper on both). the GS550DC therefore has twin front discs. Rear brake on both bikes is a drum. Both models have wire wheels. Mine still has CB points and coils etc - its about to get uprated to Boyer Bransden electonic ignition.
GS 550 DB Parts and accessories

Service

Chain Freeplay mm:
15-18mm
Coolant:
Air............
Engine Oil Grade SAE:
10/40
Engine Oil quantity with filter (litres):
2400
Fork oil grade:
50:50 mix of 10/30 and ATF
Front Fork Oil cc (left leg):
165
Front Fork Oil cc (right leg):
165
Idle Speed (rpm):
800

Brakes

Front:
Disc
Rear:
Drum
Front-Pistons-per-caliper:
1 per caliper

Electrics

Voltage:
12v
Spark Plugs:
NGK B8ES

Engine

Type:
Air Cooled 4 Stroke DOHC Inline Four
Bore x Stroke:
56 x 55.8 mm
Displacement:
549 cc
No. of Valves:
8
 

Transmission

Chain Number of Links:
110
Sprocket front:
13
Sprocket rear:
50

Misc.

Colour Options:
red, blue, black
Exhaust:
original was 4-2 (no linkage)
Motorcycle Style:
ROADSTER
Place of Manufacture:
Japan!

Power

Fuel Consumption:
35+mpg
Top Speed:
approx 112mph

Tyres

Front:
100/90-19 Tube
Rear:
120/90-V18 Tube