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M A I N T E N A N C E A N D I N S P E C T I O N
7.0
MAINTENANCE AND INSPECTION
WARNING: Release or disengage the turn the Vanguard engine switch to
the OFF position, and turn the fuel valve lever to the OFF position before
performing any maintenance and inspection. This will be referred to as the
MC-800 OFF position in sections 7.1 through 7.7.
WARNING: Damaged diamond blades are hazardous and should never be
used on a MC-800. Inspect diamond blades at least twice daily and before
each use for signs of damage.
TO AVOID INJURY.
Always inspect saw blades be-
fore use. Replace all cracked
or damaged blades.
Figure 17 - Warning label - inspect blades before use
CAUTION: Running the MC-800 generates heat in the engine muffler, blade
and blade guard. Do not touch these components without proper heat
protecting work gloves.
7.1
Removing and installing the blade
7.1.1
With engine in the OFF position, loosen the clamping knob and
remove both 1-1/2" blade change wrenches from the MC-800 handle.
7.1.2
Remove bolt in the blade guard holding bracket. Hold the blade
guard firmly and raise guard up into the holding bracket. Reinsert bolt in
the blade guard holding bracket and tighten nut.
Surface Prep
Division
Place one wrench on the drive flange to hold the blade shaft in
7.1.3
place. Place the other wrench on the blade nut and turn counter-clockwise
to loosen the nut.
Unscrew the blade nut. Slide the outer flange, spacers and blade
7.1.4
off the shaft.
Replace blade, spacers, and outer flange. Outer flange pin must
7.1.5
line up with all spacers and drive flange to fit through properly.
WARNING: Be sure that the flanges, spacers, and blade are clean and un-
damaged before mounting. Do not use damaged parts. The MC-800 maxi-
mum blade operating speed is 5850 rpm as labeled on the blade guard.
The MC-800 shaft diameter is 1 inch. Therefore, only use dry cut diamond
blades rated for higher than 5850 rpm maximum safe speed and designed
for 1-inch diameter shafts. Using a non dry cut diamond blade or a blade
rated below 5850 rpm could result in severe blade failure, personal injury
or death. Never cut material for which the blade was not designed. Check
blade manufacturer's guidelines on material to be cut. Never operate a
blade in the wrong rotation direction. Verify blade direction when changing
blades.
5850 RPM
Figure 28 - Max RPM label - maximum blade speed
2 2 H H a a z z a a r r d d C C o o m m m m u u n n i i c c a a t t i i o o n n Systems. LLC
800-746-0241
Figure 19 - Warning label - use only diamond blades
F F i i g g u u r r e e 2 2 9 9 - - W W a a r r n n i i n n g g l l a a b b e e l l - - u u s s e e o o n n l l y y d d i i a a m m o o n n d d b b l l a a d d e e s s
7.1.6
Spacers can be removed to allow room for the blade thickness.
Figure 20 - Blade nut face must be flat against outer flange
P: 877-817- 6687 F: 813-621-7125
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w w i i t t h h t t h h i i s s m m a a c c h h i i n n e e . . R R P P M M r r a a t t i i n n g g o o n n
b b l l a a d d e e m m u u s s t t e e x x c c e e e e d d m m a a c c h h i i n n e e m m a a x x r r p p m m
r r a a t t i i n n g g . . T T h h e e u u s s e e o o f f a a n n y y o o t t h h e e r r b b l l a a d d e e
c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y . .
R R e e o o r r d d e e r r N N o o . . H H S S O O U U - - 3 3 6 6 9 9 W W H H P P L L
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