Suzuki DF70A Service Manual

1D-55 Power Unit Mechanical:
4) Install conrod cap (with bearing) to conrod with the
embossed mark on cap toward flywheel side.
5) Apply engine oil to conrod bolts.
Tighten conrod cap bolts in three steps as follows.
a) Lightly seat all conrod bolts at first, then tighten
bolts 12 N⋅m (1.2 kgf-m, 8.7 lbf-ft) of specified
torque.
Tightening torque
Conrod cap bolt (1st step): 12 N·m (1.2 kgf-
m, 8.7 lbf-ft)
b) Tighten bolts 17 N⋅m (1.7 kgf-m, 12.3 lbf-ft) of
specified torque.
Tightening torque
Conrod cap bolt (2nd step) (a): 17 N·m (1.7
kgf-m, 12.3 lbf-ft)
c) Finally tighten bolts 60 degrees turn from the
point of step b) using an angular torque gauge.
Tightening torque
Conrod cap bolt (Final step): 60 degrees (47
N⋅m, 4.7 kgf-m, 34 lbf-ft)
NOTE
Purchase a commercially available angular
torque gauge for this step of tightening bolts.
NOTE
Do not rotate conrod with plastigauge in
place.
6) Remove conrod and conrod cap from crank pin.
7) Using scale on plastigauge envelope, measure
plastigauge width at its widest point.
If measurement exceeds service limit, replace
conrod bearing.
Conrod big end oil clearance
Standard: 0.032 – 0.050 mm (0.0013 – 0.0020 in.)
Service limit: 0.080 mm (0.0031 in.)
NOTE
For bearing replacement, see the “Selection
of Conrod Bearing” (Page 1D-56).
1. Embossed mark 2. Flywheel side
I9J011140253-01
I9J011140254-01
1. Plastigauge 2. Scale
I9J011140255-03
I9J011140256-01
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Suzuki DF70A Specifications

General

Engine Type	4-Stroke DOHC 16-Valve
Starting System	Electric
Steering	Remote
Number of Cylinders	4
Maximum Output	70 HP
Alternator	12V 27A
Trim Method	Power Trim and Tilt
Gear Ratio	2.59:1
Exhaust	Through Prop Hub Exhaust
Max Output	70 hp
Ignition System	Fully transistorized ignition
Fuel Tank Capacity	External
Weight	160 kg
Full Throttle Operating Range	5, 300 - 6, 300 rpm
Fuel Type	Unleaded Gasoline
Shaft Length	L: 508 mm, X: 635 mm
Displacement	1, 502 cc
Fuel Delivery System	Multi-point sequential electronic fuel injection
Oil Capacity	4.0 L
Alternator Output	27A