Maxim Manufacturing MBWT5BN - Manual (Page 4)

4
Operating Controls
Lower Handle
Recoil Starter Handle
Handle Knob
Throttle Control Lever
Trimmer control Bail
Upper Handle
Side Shield
Trimmer Head
Trimmer Line
Drag Shield
Fuel Cap
Figure 3
1. Trimmer Control Bail -- Controls the rotation of the
trimmer head. To begin trimming pull the control bail
towards the handle. To stop trimming release the control
bail. It will return to the open position and disengage the
trimmer head.
2. Throttle Control Lever -- Controls the speed of the
engine or stops the engine. To stop the engine move the
throttle back towards the operator to the stop or off po-
sition. The faster the engine runs, the faster the trimmer
head will rotate.
3. Drag Shield -- The drag shield is a safety device that
will help prevent debris from hitting the operator's feet and
legs. Never operate this trimmer without the drag shield or
if the drag shield is broken.
4. Side Shield-- The side shield is a safety device that
will help prevent debris from hitting the operator's face and
body. Never operate this trimmer without the side shield or
if the side shield is broken.
DO NOT ATTEMPT TO START OR OPERATE THIS TRIMMER UNTIL YOU ARE COMPLETELY FAMILIAR WITH
LOCATION AND USE OF EACH CONTROL NECESSARY TO OPERATE THIS TRIMMER. YOU MUST KNOW
HOW TO STOP THIS MACHINE BEFORE YOU START IT. EACH TIME PRIOR TO STARTING, CHECK THE
THROTTLE ASSEMBLY TO INSURE IT IS WORKING PROPERLY.
NEVER OPERATE THE TRIMMER WITHOUT
PROPER GUARDS, SHIELDS OR OTHER SAFE-
TY DEVICES IN PLACE. SERIOUS INJURY OR
DEATH COULD RESULT.
EVEN THOUGH THIS TRIMMER IS EQUIPPED
WITH SAFETY SHIELDS, IT IS POSSIBLE FOR
DEBRIS TO BE THROWN FROM THE TRIM-
MER. WEAR SAFETY GLASSES AT ALL TIMES
AND KEEP THE TRIMMING AREA CLEAR OF
BYSTANDERS ESPECIALLY SMALL CHILDREN
AND PETS.
STRING TRIMMERS ARE PRONE TO DEBRIS BUILD-UP. CLEAN GRASS AND OTHER DEBRIS FROM
GUARD, DECK, MUFFLER AREA, HEAD COOLING FINS, AND THROTTLE CONTROLS.
5
Adjustments and Maintenance
Starting the engine
1. Read engine owner's manual for complete starting instruction. Do not operate this trimmer without reading the engine
owner's manual.
2. Move the throttle control lever forward to the START or FAST position.
3. Push primer bulb firmly 3 times before starting engine. Note: Priming is usually unnecessary when restarting a warm
engine.
4. Grasp rope handle and pull slowly until resistance is felt. Then pull cord rapidly to overcome compression, prevent
kickback and start engine.
5. Operate engine in the fast throttle position.
Trimmer Line
1. Your trimmer loses trimming efficiency when the trimmer line is used beyond half of original length.
2. For best performance use a heavy gauge (.155" diameter) line.
3. Cut trimmer line to 23 inches.
4. Stop the engine. Wait for all moving parts to stop. Disconnect spark plug wire.
5. Remove worn trimmer line.
6. Thread trimmer line through outside holes as shown in Figure 4.
7. Bring the two ends together and insert them (from the back) through the center holes as shown in figure 5.
8. Tighten the trimmer line as shown in Figure 6.
9. Repeat for the other side.
Figure 4 Figure 5 Figure 6
Cut Height Adjustment
1. The cut height can be set at 1 7/8" and 3 3/4".
2. Stop the engine. Wait for all moving parts to stop. Disconnect the
spark plug wire.
3. Use the allen wrench found in the parts bag to loosen the set screw
shown in Figure 7.
4. Set the trimmer head at the desired height.
5. Tighten the set screw.
Lubrication of Jackshaft
1. Stop the engine. Wait for all moving parts to stop. Disconnect the
spark plug wire.
2. Use a grease gun with a good grade of automotive grease to lubricate
the jackshaft using the grease fitting (See Figure 7).
Drive Belt Adjustment
1. If the trimmer head does not turn effectively. The drive belt may have seated.
2. Stop the engine. Wait for all moving parts to stop. Disconnect the spark plug wire.
3. Observe distance between inside span of belts at the narrowest point. Span should measure 1 inch.
4. Loosen the bolts that hold the trimmer head and jackshaft to the trimmer under body (See Figure 7).
5. Move the assembly forward to tighten the belt or remove belt and replace if it is worn.
6. Tighten bolts.
7. Recheck the belt inside span.
Maintenance Schedule
1. Before each use: Check engine oil level, Check trimmer lines, Check trimmer head engagement, Clean engine, en-
gine bonnet and machine of excess grass and oil, Remove debris from guard, engine bonnet, and deck, and Check nuts
and bolts for appropriate tightness.
2. After every 25 hours: Check spark plug, Change engine oil, Change or clean air filter, lubricate jackshaft, and lubri-
cate wheel bearings.
Grease fitting
Belt Adjustment
Bolt
Set Screw
Figure 7