Briggs & Stratton 5900834 ユーザーズマニュアル

Mulching consists of a mower deck which cuts and 
recuts clippings into tiny particles and which then 
blows them down INTO the lawn. These tiny particles 
decompose rapidly into by-products your lawn can 
use. UNDER PROPER CONDITIONS, your mulching 
mower will virtually eliminate noticeable clippings on 
the lawn surface.

NOTE: When mulching under heavy cutting 
conditions, a rumbling sound may be present and is 
normal.

Mulching mowers cannot function properly if the grass 
is wet, or if the grass is simply to high to cut. Even 
more than normal mowing, mulching requires that the 
grass be dry and the appropriate amount is cut. 

Do not use the mower as a mulching mower during 
the first two or three mowings in the spring. The 
long grass blades, quick growth, and often wetter 
conditions are more suitable for broadcasting (side-
discharging) or grass bagging operation. 

Use full engine throttle matched with a slow ground 
speed so that clippings will be finely cut.  Ground 
speed while mulching should be HALF of the 
speed that would be used when broadcasting (side 
discharging) under similar conditions. Since mulching 
requires more horsepower than broadcasting, using 
a slower ground speed is vitally important for proper 
mulching operation.

The best mulching action typically results from cutting 
only the top 1/2 inch to 3/4 inch of grass blade. This 
provides short clippings which decompose properly 
(much more quickly than longer clippings). The ideal 
cutting height will vary with climate, time of year, 
and quality of your lawn. We recommend that you 
experiment with both the cutting height and ground 
speed until you achieve the best cut. Start with a high 
cutting height and using progressively lower settings 
until you find a cutting height that is matched to your 
mowing conditions and preferences.

Operation

Not 

for  

Reproduction