Assembly; Installing The D-Handle; Installing The String Guard; Before Starting - Toro 51903; 51904; 51906; 51907 Operator's Manual

Assembly

Note: Failure to follow these assembly
instructions may cause flex shaft
failure.

Installing The D-handle

1. Push the D-handle down over the boom (Fig. 2).
2. Install the bolt, washer and wing nut and tighten
(Fig. 2).

Installing The String Guard

POTENTIAL HAZARD
Foreign objects can be thrown by trimmer.
WHAT CAN HAPPEN
Contact with thrown objects can cause
personal injury.
HOW TO AVOID THE HAZARD
Never operate the trimmer without the
string guard in place.
Model 51903
1. Place the string guard onto the boom above the
clamp assembly (Fig. 3).
2. Push the string guard down to the top of the
string head assembly and then rotate the string
guard to the proper position (Fig. 4). The string
guard is in the correct position when the string
guard points toward the engine, and the holes in
the string guard line up with the holes in the top
of the string head assembly.
3. Install the screws with a Phillips screwdriver
(Fig. 5).
EN–5
Model 51906
1. Slide the string guard onto the guard mount
above the string head assembly. Align the screw
holes in the string guard with the screw holes in
the string assembly (Fig. 6).
2. Place the three hex nuts into the recessed holes
on top of the guard (Fig. 7).
3. Install the screws into the holes from the bottom
of the guard. Tighten the screws (Fig. 8).

Before Starting

Oil And Fuel

THIS ENGINE IS CERTIFIED TO OPERATE
ON UNLEADED GAS AND OIL MIXTURE.
Note: BE SURE TO READ THESE
INSTRUCTIONS CAREFULLY
BEFORE ATTEMPTING TO START
OR OPERATE THIS UNIT. Using old
or improper oil or fuel, or improperly
mixing the oil and fuel can cause
engine damage. This type of damage
will void the engine warranty.