Joyner JNSZ1100SVB Owner's Manual page 69

during the process of clearing.
Do not drop filth into the air inlet and the
water channel.
33. Routine checks
1.8. Cylinder cover
Use the straight knife sharp edge ruler to
measure the levelness at various points as
shown in the figure. Cylinder cover
0.10mm Air inlet branching pipe surface
0.10 mm
1.9. Valve spring
1.9.1. Use a square ruler to measure the
right angle of the valve spring.
Replace the spring if it fails to meet
the specifications.
[Limit] 1.2mm
1.9.2. Measure the free state of spring
[Benchmark value] 37mm
1.10. Routine checks on throttles
1.10.1. Check to see if there are some
deformations, obvious tears and
wears
Check list on valve Unit: mm
item
wide
Width of valve top
1.10.2. Checks on the clearance between
the throttle guiding pipe and throttle
thrusting rod
1.10.2.1. Use a dial gauge to measure
the inner diameter of the
throttle-guiding pipe, and use a
caliper to measure the outer
diameter.
1.10.2.2. Work out the differences of the
measured values. If it is above the
specified limits, the throttle or the
guiding pipe must be replaced.
Attention The measurement points are
standard
IN 0.85～1.41
EX 1.07～1.36
IN 1.0±0.2
EX 1.0±0.2
limit
—
—
0.75
0.75