Suzuki DF 50 Service Manual

6-25 POWER UNIT
CYLINDER HEAD
Remove all carbon from combustion chambers.
NOTE:
• Do not use any sharp edged tool to scrape carbon off cylin-
der head or its components.
• Be careful not to scuff or nick metal surfaces when decarboning.
Check cylinder head for cracks in intake and exhaust ports,
combustion chambers, and head surface.
Valve seat
Check valve seat, if cracks or other damage is found, replace
cylinder head.
Cylinder head distortion
Using a straightedge and thickness gauge, measure cylinder
head distortion (gasket surface) at a total of six (6) locations as
shown.
09900-20803 : Thickness gauge
Cylinder head distortion
Service limit : 0.05 mm (0.002 in.)
If measurement exceeds service limit, resurface or replace cyl-
inder head.
NOTE:
Cylinder head can be resurfaced, using a surface plate and
#400 grit wet sandpaper.
Move the cylinder head in a figure eight pattern when sanding.
INSPECTION / SERVICING
NOTE:
If cracks, excessive wear or other damage is found on any com-
ponent, replace component.
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Suzuki DF 50 Specifications

General

Engine Type	4-Stroke
Cylinders	3
Displacement	941 cc
Starting System	Electric
Steering	Remote
Engine Type Detail	DOHC 12-Valve
Maximum Output	50 HP
Ignition System	Digital CDI
Alternator	12V 19A
Gear Ratio	2.27:1
Exhaust	Through Prop Hub Exhaust
Trim Method	Power Trim and Tilt
Max Power	50 HP
Alternator Output	12V 19A
Fuel Delivery System	Sequential Multi Point Electronic Fuel Injection
Full Throttle Operating Range	5, 300 - 6, 300 rpm
Engine Oil Capacity	2.7 L
Full Throttle RPM Range	5300 - 6300 RPM
Oil Capacity	2.7 L
Bore x Stroke	72.5 x 76.0 mm (2.85 x 2.99 in.)