attachment guard if it has been exposed to
impact or is cracked.
• Check that the blade is not damaged and not
cracked. Replace the blade if necessary.
• Check that the support flange is not damaged.
• Check that the locknut is tight.
To perform weekly maintenance
• Check that the bevel gear is filled to ¾ with
grease. Fill if necessary using special grease.
To check the bevel gear
The bevel gear is filled with the right quantity of
grease at the factory. The grease in the bevel gear
does not normally need to be changed except if
repairs are carried out.
• Before using the product check that the bevel
gear is filled to ¾ with grease. Fill if necessary
using special grease.
a) For model HEC-EX850:
b) For model HES-EX850:
To lubricate the flexible drive shaft
Only for model HEC-EX850.
1. Loosen the 2 screws on the bevel gear.
2. Remove the bevel gear.
3. Take a firm grip on the hollow shaft (A) and
remove the flexible drive shaft (B) from the
opposite end of the gear box.
C
B
A
Note: The bushing (C) will fall off when you
remove the flexible driveshaft. Make sure that
you do not lose it. Put the bushing safely aside.
4. Lubricate the entire length of the flexible drive
shaft.
5. Reinsert the flexible driveshaft in the hollow
shaft. Turn the flexible driveshaft while inserting it
so that it correctly engages in the bevel gear.
6. Attach the bushing on the flexible drive shaft.
7. Attach the bevel gear on the hollow drive shaft
and tighten the 2 screws.
Technical data
Technical data
HEC-EX850, HES-EX850
Weight, lbs / kg
8.5 / 3.9
Blade length, inch / mm
7.7 / 195
Center hole, blade, inch / mm
1 / 25.4
Speed, blade, rpm
7140
Sound power level, guaranteed (L
WA
) , dB(A)
114
8
1029 - 001 - 29.01.2019