BlueBird S530B_968999683 - Manual (Page 29)

BLUEBIRD -29
Wheels
Turn off engine and empty all fuel from the fuel tank
Remove weights and drive guard.
Loosen the lock nut on adjustment screw to loosen the
chain. Remove master link and chain.
Tip the front end up to let the aerator rest on its
handle. The front wheel will be approximately one foot
off the ground.
Remove the four wheel shaft bearing bolts (4 on 1.
the 424 and 530 and 6 on the 742).
IMPORTANT INFORMATION
Excessive adjustment of the lock nut will
damage the cam rod. ALWAYS replace a free
spinning nut to avoid unwanted loosening of
the handle. For smooth operation of the cam,
apply a small amount of grease on the cam
edge.
8060-012
Collar punch pin hole
Remove the wheel axle assembly. 2.
Drive Wheel Shaft
Removal and Replacement
Pull sprocket and bearing from shaft. 3.
NOTE: Sprocket is double set screwed. To remove
the bearings, you must first remove the collar by
loosening the set screw, then insert pin punch
into the hole next to the set screw and, using a
hammer, with moderate striking, hit collar so that it
rotates in the opposite direction the wheel would
normally turn. If bearings are rusted in place they
will have to be replaced along with the wheel and
shaft.
Install bearings and sprocket loosely onto the
4.
shaft. Models 424 and 530: hub side away
from wheels. Model 742 has 3 bearings. Wheel
bearings should have hubs facing away from
wheel. Wheel shaft bearing should have hub
facing away from sprocket.
Bolt bearings into place.
5.
Center the wheels between the wheel opening 6.
and the housing. Lock the collars in place and
tighten set screws.
Align and tighten the sprocket (there are double
7.
set screws stacked two in each hole) use blue
loctite with the key in place.
Replace the chain following procedures in section
8.
“Chain Removal and Replacement”.
Adjust chain per section “Adjusting Chain
9.
Tension” and replace drive guard.
CAUTION!
Secure handle to prevent aerator from
tipping.
MAIntenAnCe AnD seRVICe