Valve Clearance; Carburetor; Oil Alert System Inspection - EMAK K 700 H Workshop Manual

3.6 Valve clearance

Valve clearance inspection and adjustment must be done with the
engine cold.
1. Remove the cylinder head cover, and set the piston at top dead
centre of the compression stroke (both valves will be fully
closed).
2. Measure the clearance between the rocker arm and the valve
stem with a feeler gauge.
Intake: 0.15 ± 0.02 mm
Exhaust: 0.20 ± 0.02 mm
3. To adjust valve clearance, hold the rocker arm pivot and loosen
the pivot lock nut.
4. Turn the rocker arm pivot to obtain the specified clearance.
5. Hold the rocker arm pivot and tighten the pivot lock nut.
6. Recheck the clearance and readjust if necessary.
7. Install the cylinder head cover.

3.7 Carburetor

Idle speed
1) Start the engine and allow it to warm up for about 10 minutes.
2) Set the throttle lever in the position for lowest speed.
3) Use tools to adjust the throttle stop screw, to bring the idle
speed within the range of standard idle speed.
Standard idle speed: 1800 ± 150 rpm.

3.8 Oil alert system inspection

Oil alert system is specially designed to protect engine from
damage by insufficient oil in the crankcase. Before the oil level in
the crankcase can fall below a safe limit, the oil alert system will
automatically shut down the engine (the engine switch will
remain in the ON position). The oil alert system shuts down the
engine and the engine will not start. If this occurs, first check
engine oil level, then check for other faults.
1) With the engine running, disconnect the engine switch's
yellow lead and ground it to the engine, the engine should
stop.
2) With the engine stopped, engine oil level within the specified
range and two leads of oil level switch not disconnected,
there should be continuity between the two leads.
3) Then check with engine oil drained off. There should be
continuity between leads of oil level switch.
Valve stem
20
Workshop manual
Feeler gauge
Valve clearance
Rocker arm
Pivot lock
Push rod
Rocker arm pivot
Throttle stop screw
Oil alert unit
Oil level switch
nut