Specifications - Stihl RM 248.3 T Instruction Manual

19 Specifications

Fault Cause
Fuel line is blocked.
Inferior, dirty or old fuel in tank. ► Use fresh, good-quality unleaded petrol.
Air filter dirty.
Spark plug socket is detached
from spark plug or ignition lead
is not properly fastened to
socket.
Spark plug is dirty, damaged or
electrode gap is incorrect.
Resistance at blade is too great. ► Set a higher cutting height.
Engine diffi‐ Lawn mower housing is
cult to start or blocked.
engine power
deteriorating.
Cutting height is set too low or
rate of feed is too high.
Water in fuel tank and carburet‐
tor or carburettor is blocked.
Fuel tank contaminated.
Air filter dirty.
Spark plug dirty.
Engine over‐
Engine oil level is too low.
heating.
Cooling ribs dirty.
Lawn mower Blade is damaged.
vibrates
excessively.
Blade is not correctly attached.
Grass is not Blade is blunt or worn.
being cut
cleanly.
19 Specifications
19.1 Lawn Mower STIHL
RM 248.3 T, RM 253.3 T
– Engine type: STIHL EVC 205
– Displacement: 127 cc
– Power (P): 1.8 kW (2.5 hp) at 2800 rpm
– Speed (n): 2800 rpm
– Maximum fuel tank capacity: 0.8 l
– Weight (m):
– RM 248.3 T : 32 kg
– RM 253.3 T : 34 kg
– Maximum grass catcher box capacity:
– RM 248.3 T : 52 l
– RM 253.3 T : 55 l
– Cutting width:
– RM 248.3 T : 46 cm
– RM 253.3 T : 51 cm
0478-111-9615-B
Remedy
► Consult a STIHL specialist dealer.
► Clean or replace air filter as described in engine
instruction manual.
► Connect spark plug socket.
► Check connection between ignition lead and plug.
► Clean or replace spark plug.
► Adjust electrode gap.
► Start engine in lower grass.
Clean lawn mower.
Adapt cutting height or mow more slowly.
Empty fuel tank, clean fuel line and carburettor.
Consult a STIHL specialist dealer.
Clean or replace air filter as described in engine
instruction manual.
Clean or replace spark plug.
Add or change engine oil as described in engine
instruction manual.
Clean lawn mower.
Replace blade.
Attach blade.
Sharpen or replace blade.
19.2 Blade
– Minimum thickness a: 1.6 mm
– Minimum width b: 55 mm
– Sharpening angle c: 30°
English
37