Master Gardner S-50 User manual

The Master Gardner Company
5770 N. Blackstock Rd.
Spartanburg SC 29303
[phone]
www.mastergardner.com
ASSEMBLY MANUAL
Please read all instruction prior to assembly.
Do not completely tighten screws until the assembly has been
completed. Before assembly it is recommended to set parts on
a at surface and verify that there are no missing parts.
BROADCAST SPREADER
50 lb. CAPACITY
Model S-50

2
2. Remove and identify loose parts from carton and bag.
1. HELPFUL HINTS:
READ THE DIRECTIONS BEFORE ASSEMBLY
WHEN ALL ELSE FAILS, READ THE DIRECTIONS AGAIN
If your spreader does not spread evenly, be sure the FRONT on the gear box points to
the front of the spreader. The impeller must turn clockwise. Reversing the gear box will
cause the impeller to turn counter clockwise. Clean the impeller plate after each use.
Fertilizer stuck on the impeller blades will cause uneven spreading.
Your spreader is designed to be pushed at three miles per hour, which is a brisk
walking speed. Slower or faster speeds will change the spread patterns. Wet fertilizer
will also change the spread pattern and flow rate. Clean your spreader thoroughly after
each use. Wash between the shut off plate and bottom of the hopper.
Gears are permanently lubricated at the factory. Do not open the gear box or dirt may
enter.

3
ASSEMBLY INSTRUCTION
1. Turn Hopper (#16) upside down and attach Frame (#30) using four screws ST6.3 x 40 (#43).
2. a) Slide the Impeller (#42) onto the spindle of the Gear Box Assembly (#39).
b) Insert Screw M4 x20 (#41) through the Impeller and the top of the gear box spindle.
3. a) Find the two Wheel Assembly Frames (#20).
b) Insert M6 x 60 bolt (#32) through the right hand Wheel Assembly Frame (#20) and into the
Hopper Frame Assembly (#30). Secure with Lock Nut M6 (#24). Repeat on left side. NOTE: The
nuts and bolts do not have to be completely tightened yet.
4. a) Attach one end of each Frame Brace (#31) to the outside of the Hopper Frame Assembly
(#30) using bolt M6 x 35 (#33) and M6 lock nut (#24).
b) Push a M6 x45 bolt (#11) through the first hole above the axle in right hand Wheel
Assembly Frame (#20). Pass bolt through the Frame Brace (#31) and into the end of the Cross
Brace (#45). Repeat with the left side. NOTE: The nuts and bolts do not have to be completely
tightened yet.
M4X20

4
5. Slip Inner Axle Bushing (#37) onto the right side of the axle, pushing the Inner Axle Bushing
into the Outer Axle Bushing until tight. Attach Wheel (#36) to the right side of the axle by inserting
a M5 x 45 bolt (#47) and fastening with Lock Nut M5 (#44). Attach Axle End Cap (#35) by tapping
with a wooden or rubber mallet.
b) Slip Inner Axle Bushing (#37) onto the left
side of the axle, pushing the Inner Axle Bushing into the Outer Axle Bushing until tight. Push the
Wheel onto the axle. Insert Flat Washer Ø 16 (#34) and attach Axle End Cap (#35) by tapping
with a wooden or rubber mallet. NOTE: The nuts and bolts do not have to be completely
tightened yet.

5
Note: Insert the Inner axle bushing into the
outer axle bushing and make sure they are
tight.
6. Insert Handle Shaft (#26) between the top ends
of the Wheel Assembly Frames (#20). Pass two
Bolts M6 x 45 (#11) through Wheel Assembly
Frames and Handle Shaft. Slip Pivot and Bracket
Assembly (#19) onto protruding bolt ends. Fasten
with Lock Nuts M6 (#24). Pivot and Bracket
Assembly should be on the right side of the handle
when standing behind the spreader.
GO BACK AND TIGHTEN ALL NUTS AND BOLTS ASSEMBLED SO FAR. DO NOT
OVER TIGHTEN.
NOTE: The handle can be higher or lower depending on the user’s preference. Before installing
the gauge, upper handles and handle shaft, decide which of the three positions will be most
comfortable for the operator. If the middle or upper positions are chosen, use a handle spacer in
the hole nearest to the handle grips.
7. a) Insert Bolts M6 x 45 (#11) through the Upper Left Handle (#23), then through the Handle
Spacer (#1) and Upper Handle on the Right side, screw with Flat Washer Ø 6 (#48) and Lock Nut
M6 (#24). Slide Gauge and Lever Assembly (#4) onto the bolts and fasten with Lock Nut M6
(#24).
b) Tighten lock nuts securely.
6

6
8. a) Push the Adjustable Handle (#6,#7) to the lowest position.
b) Insert the upper end of the Control Rod (#25) into the hole at the end of the Adjustable
Handle (#6,#7).
c)Take lower nut (#21) off the bottom end of the Control Rod (#25) and insert rod into the hole
in the Pivot and Bracket Assembly (#19).
d) Screw nut back into place.
9. Slip the threaded end of Adjustable Connecting Rod (#46) into the Shut Off Plate (#27) with a
Flat Washer Ø6（#48）, then fasten with Flat Washer Ø6（#48）and Lock Nut M6 (#24).

7
10. a) The three large holes at the bottom of the hopper should match the three holes in the
adjustable plate. If they match, do nothing. If they do not match, push the handle down to the
lowest position and adjust the positions of the two nuts on the threaded control bar until the three
holes match up. If the holes are not properly aligned, the hopper will not close completely.
b) To operate the spreader, push the handle up to the top position. Adjust the wing nut as
needed to regulate the flow of material passing through the spreader.
c) Insert R Pin (#17) into the hole at the top of the axle spindle at the bottom of the Hopper
(#16) as shown. Make sure impeller is turning in the right direction as indicated by the arrow.
d)Place Screen (#14) into the Hopper (#16).

8
DRAWING
51

9
PARTS LIST
Ref#
Description
Qty
Ref#
Description
Qty
1
Handle Spacer
1
26
Handle Shaft
1
2
Carriage Bolt M6x25
1
27
Shut off plate
1
3
Teeth Washer Ø8
Ø8
1
28
Big Flat Washer Ø4
3
4
Gauge & Lever Assembly
1
29
Screw ST4.2x12
3
5
Adjust Handle Pole
1
30
Frame
1
6
Adjust Handle A
1
31
Frame Brace
2
7
Adjust Handle B
1
32
Hex Bolt M6X60
2
8
Screw ST4.2x18
1
33
Hex Bolt M6X35
2
9
Spacer
1
34
Flat Washer Ø16
1
10
Wing Nut M6
1
35
End Cap
2
11
Hex Bolt M6x45
7
36
Pneumatic Wheel
2
12
Nylon Washer
1
37
Inner Axle Bushing
2
13
Big Flat Washer Ø6
1
38
Outer Axle Bushing
2
14
Screen
1
39
Gear Box & Axle Assemble
1
15
Handle Cover
2
40
Thin Washer
1
16
Hopper
1
41
Screw M4x20
1
17
R Pin Ø2X60
1
42
Impeller
1
18
Hopper Bushing
1
43
Screw ST6.3X40
4
19
Pivot & Bracket Assembly
1
44
Hex Lock Nut M5
1
20
Wheel Assembly Frame
2
45
Cross Brace
1
21
Nut M6
2
46
Adjust Connect Rod B
1
22
End Cover
2
47
Hex Bolt M5X45
1
23
Upper Handle
2
48
Flat Washer Ø6
4
24
Lock Nut M6
12
49
Lock Washer Ø6
1
25
Control Rod A
1
50
Cotter Pin Ø2x10
1
51
Rain Cover
1

10
USING YOUR SPREADER
1. Determine approximate square footage of area to be covered and estimate amount of
material required.
2. Before filling the hopper, make sure the flow control arm is in the off position and the closure
plate is shut.
3. Break up any lumpy fertilizer as you fill the hopper.
4. Set the adjustable stop with the flow control arm still in the off position. Refer to the
application chart on this page and to the instructions on the fertilizer bag to select the proper
flow rate setting.
5. The application chart is calculated for light to heavy application at a vehicle speed of 3 mph,
or 100ft. in 23seconds. A variation in speed will require an adjustment of the flow rate to
maintain the same coverage. The faster you drive, the wider the broadcast width.
6. Make sure the drive pin is in stalled in the axle before starting the spreader.
7. Always start the spreader in motion before opening closure plate.
8. Always shut the closure plate before turning or stopping the spreader.
9. If fertilizer is accidentally deposited too heavily in a small area, soak the area thoroughly with
a garden hose or sprinkler to prevent burning of the lawn.
10.To insure uniform coverage, make each pass so that the broadcast pattern slightly overlaps
the pattern from the previous pass as shown in figure below. The approximate broadcast
widths for different materials are shown in the application chart on this page.
11.When broadcasting weed control fertilizers, make sure the broadcast pattern does not hit
evergreen trees, flowers or shrubs.
12.Heavy moisture conditions may require a cover over the hopper to keep contents dry. The
vinyl cover acts as a wind and moisture shield, but should not be used as a rain cover.

16
CALCULATING AMOUNT OF MATERIAL NEEDED
To calculate the amount of fertilizer you will need to cover your lawn, divide the coverage amount listed on
the label by the weight of the fertilizer bag. For example a 10LB. bag of fertilizer with coverage of 10,000
square feet will distribute 1LB. of fertilizer every 1,000 square feet at full rate or 1/2LB. of fertilizer every
1,000 square feet at half rate. For pre-calculated rates see Chart A (Example: 25LB. bag with 15,000 sq.
ft. coverage = 1.7LB./1,000 sq. ft.). Use Chart B to find the closest spreader setting (Example:
1.7LB./1000 sq. ft. = Spreader Setting of 8).
Chart A - Square Foot Coverage per Bag*
LBS/1,000 SQ FT
Weight of Bag (LBS.)
5,000 SQ FT COVERAGE
10,000 SQ FT COVERAGE
15,000 SQ FT COVERAGE
5
1.0 LB.
0.5 LB.
0.3 LB.
10
2.0 LB.
1.0 LB.
0.7 LB.
15
3.0 LB.
1.5 LB.
1.0 LB.
20
4.0 LB.
2.0 LB.
1.3 LB.
25
5.0 LB.
2.5 LB.
1.7 LB.
30
6.0 LB.
3.0 LB.
2.0 LB.
35
7.0 LB.
3.5 LB.
2.3 LB.
40
8.0 LB.
4.0 LB.
2.7 LB.
45
9.0 LB.
4.5 LB.
3.0 LB.
50
10.0 LB.
5.0 LB.
3.3 LB.
55
11.0 LB.
5.5 LB.
3.7 LB.
*These are only estimates actual amounts may vary.
Chart B - Spreader Settings/Spread Widths
MULTI-
USAGES
LBS/1,000
SQ FT
SPREADER
SETTING
•
SMALL
PARTICLE
SPREAD
•
MEDIUM
PARTICLE
SPREAD
•
LARGE
PARTICLE
SPREAD
1
5
5-6 FT.
6-9 FT.
9-12 FT.
2
8
5-6 FT.
6-9 FT.
9-12 FT.
3
10
5-6 FT.
6-9 FT.
9-12 FT.
4
13
5-6 FT.
6-9 FT.
9-12 FT.
5
15
5-6 FT.
6-9 FT.
9-12 FT.
6
18
5-6 FT.
6-9 FT.
9-12 FT.
7
20
5-6 FT.
6-9 FT.
9-12 FT.
8
23
5-6 FT.
6-9 FT.
9-12 FT.
9
25
5-6 FT.
6-9 FT.
9-12 FT.
10
28
5-6 FT.
6-9 FT.
9-12 FT.
FERTILIZER
GRASS
SEEDS
ICEMELT
11
30
5-6 FT.
6-9 FT.
9-12 FT.
NOTE: DO NOT USE SALT. Using salt in this spreader will damage the mechanism and shorten the life of the
machine.
Spreading Instructions