GrassFlap 412T User manual
GrassFlap.com Phone: (502) 594-3546
Parts List
10-99-12
Deector Angle
10-99-15
Blocker Plate
10-99-42
Hinge Plate Low
Prole 8-inch
10-99-52
Bushing Kit for
Flap Hex
10-99-11
Flap Spring
10-99-31
Low Prole
Spring Mount
10-99-22
Clevis Pin
10-99-55
Flap Mount 12
10-99-28
Bushing Cable Pin
Flap End
5/16 x 3/4
Hex Bolt
Rev 10.2021
10-99-32
Bushing
Spring Bolt
GrassFlap 412T Assembly Instructions
10-99-51
Bushing Kit for Pedal Hex
10-99-07
Cable 70 Inch 10-99-35
SE Pedal Assembly
10-99-21
Clevis Kit
10-99-07
Cable 70 Inch
10-99-51
Bushing Kit for
Pedal Hex
10-99-13
RE Pedal Assembly 10-99-41
SEL Pedal Assembly
10-99-08
Cable 50 Inch
10-99-21
Clevis Kit
Cable
Tie
Cable
Tie
Grass
Flap
grassflap.com
Instruction videos available online at
http://www.youtube.com/user/GrassFlap
and at GrassFlap.com
PLEASE READ!
If you are having ANY ISSUES
with assembly or operation.
Please contact us at:
(502) 594-3546
or
david@grassap.com
STEP 1
STEP 2
A
B
Cut blocker plate to length.
A) Position blocker plate front to back on discharge with
minimum ½ inch overhang at rear. Blocker plate
should be even with bottom of deck at rear of
discharge. Level top edge to be parallel to top of deck.
B) Mark and cut the blocker plate length leaving a
minimum of 1/2” overhang front and back. Trim and
round corners for clean look.
GrassFlap 412T Assembly Instructions
GrassFlap.com Phone: (502)594-3546 3
STEP 3
Install no-drill mount.
Install no-drill mount using 3/8-16 x 1” hex bolts
and nuts as shown.
Tools List
Wrench & Socket - 7/16”, 1/2”, 9/16”
Drill Bit - 1/4”, 11/32”, 13/32”
Pliers
Center Punch
Zip Ties
Saw
Snips
Hammer
Drill
Mount ap assembly to no-drill.
A) Use 3/8-16 x 1”carriage bolts provided.
B) Make sure the ap is ush with opening and tighten
bolts.
STEP 5
Install Blocker Plate and Deector Angle
A) Reposition blocker plate to deck and clamp it to the
hinge plate. Drill two 1/4” holes in blocker plate.
Start tee nut into holes from back side. Start
screws into tee nuts. Do not tighten yet. Caution:
do not drive tee nut completely through plate or
damage to threads may occur.
B) Slide deector angle between blocker plate and
hinge plate with red tape against hinge plate.
C) Check deector angle for interference when ap is
closed, trim or notch with tin snips if needed.
D) Peel tape and apply angle to hinge plate, leave 1/16”
minimum gap between bottom of angle and top of
deck/ap mount.
STEP 6
STEP 4
GrassFlap 412T Assembly Instructions
GrassFlap.com Phone: (502)594-3546 4
A
B
Bolt On Spring Mount
A) Place spring mount on ap so large hole on spring
mount ts over nut on pivot bolt (do not loosen pivot
bolt nut).
B) Install spring mount as shown using 5/16-18 x 3/4”
carriage bolt provided through slot and snug.
STEP 7
Secure Blocker Plate & Attach Flap Spring
A) Drill and install six remaining tee nuts and bolts to
secure blocker plate.
B) Use a small box end wrench to hook spring over
post on hinge assembly.
C) If needed, reposition ap to make good seal. Tighten
ap mounting bolts
GrassFlap 412T Assembly Instructions
GrassFlap.com Phone: (502)594-3546 5
STEP 8
Install Cable
A) Slip rubber boot o tting by pulling at base of boot.
Remove Nut 1 and slip cable wire into slot.
B) Put cable tting into hole and snug jam nuts leaving
minimum thread showing between Nut 1 and
rubber boot.
DO NOT connect clevis to ap at this time.
DO NOT OVERTIGHTEN NUTS.
Nut 1
BootNut 1 Fixed Clevis
Nut 2
PEDAL END
(Cable Installaon, step 1 and 4, AREAS TO
PAY PARTICULAR ATTENTION TO, Recommended cable roung, WARNINGS)
(Recommended cable roung, SECURE
WITH CABLE CLAMP/ZIP TIE)
Cable Installaon, step 2,
PROPER PEDAL HEIGHT)
(Cable Installaon, step 3, MAINTAINING THE CABLE)
FLAP END
(Cable Installaon, step 1 and 4, AREAS TO
PAY PARTICULAR ATTENTION TO, page 6 installaon guide, WARNING)
ROUTING
(Cable Installaon, step 4, AREAS TO PAY PARTICULAR
ATTENTION TO)
(Cable Installaon, step 5, REFERENCE 6” RADIUS)
(See recommended cable roung)
GrassFlap.com Phone: (502)594-3546 6
GrassFlap Cable Installation
WARNING: PROPER CABLE INSTALLATION AND MAINTENANCE
IS CRITICAL TO LIFE OF CABLE
4) AREAS TO PAY PARTICULAR ATTENTION TO ARE:
1. Do not bend cable wire.
2. Make certain the cable is not in a bind when the deck is raised either manually
or when mowing.
3. Leave enough slack where the cable is tied to mower to keep out of the belts
for the deck to raise and lower without straining the cable.
4. Avoid direct heat on cable, do not route near muer
5. Maintain recommended bend radius of 6 inches for all bends.
3) MAINTAINING THE CABLE:
1. Be sure the rubber boot is in place to keep dirt and water out of cable.
2) PROPER PEDAL HEIGHT:
1. Adjust pedal height so pedal bottoms out with full pressure to
prevent cable from carrying full weight of operator. Start with
cable tting as shown - adjust pedal end to raise pedal, adjust
ap end to lower pedal. Verify pedal height with ap in
balance (half open) position.
DO NOT BEND
1) Improper cable routing WILL cause failure, usually within
the rst month of use. The rst 1/2 inch of cable conduit
(black exible part) must be straight in line with the end tting.
Cable wire near ball must not be bent during installation.
R
e
f
e
r
e
n
c
e
6
”
r
a
d
i
u
s
f
o
r
c
a
b
l
e
r
o
u
t
i
n
g
.
5) MINIMUM BEND RADIUS
GrassFlap.com Phone: (502)594-3546 7
How to set
pedal height:
Pedal End
(1 thread showing)
Flap End
(1 thread showing)
this side
this side
GrassFlap.com Phone: (502)594-3546 8
SE Pedal SEL Pedal
Step 4
Step 5
Step 2
Position removable clevis onto cable ball.
Step 1
Pull rubber boot o of cable tting and spin nut 1
o of cable tting. Spin nut 2 onto tting so one
thread is showing.
SE & SEL Pedal Cable Installation
1 thread
Nut 1
Nut 2
For video showing
how to install cable
on pedal scan using
phone camera.
Secure with
cable tie
A) Once pedal is installed on mower attach cable clamp
or zip tie to secure cable.
B) Verify everything is in place and secure.
A) Position removable clevis on pedal with clevis slot
on cut out side of pedal.
B) Insert 1/4 pin with head on same side as clevis slot.
C) Insert cotter pin and wrap around pin to secure.
C
A
B
A) Slip cable wire into slot.
B) Spin nut 1 onto tting to secure cable to pedal.
DO NOT OVERTIGHTEN NUTS.
C) Push rubber boot back onto tting.
Step 3
GrassFlap.com Phone: (502)594-3546 9
SE Pedal Location & Cable Routing
Option 1
Option 2
Option 3
Preferred locations for SE pedal assembly.
WARNING:
First
½” after
tting must
be straight
SE Pedal Cable Routing
on Stand-On
Tie cable
down
WARNING:
First ½” after
tting must
be straight
WARNING:
First ½” after
tting must
be straight
2x
Install Pedal
A) Mark and drill two 11/32” holes, if needed, for pedal
mounting bolts.
B) Tighten two 5/16” x 1” carriage bolts to secure pedal
assembly to mower deck.
Option 1
Secure with
zip-tie Option 2 SE Pedal Cable Routing
on Zero Turn
WARNING:
First
½” after
tting must
be straight
A
B
C
D
FLAP CONNECTION
3/16”
Clevis Pin
10-99-22
Bushing Cable
Pin Flap End
10-99-28
Flap Connection:
A) Place 1/4”bushing in ap.
B) Slip clevis onto ap.
C) Insert 3/16 pin with head
on spring side.
D) Insert cotter pin and bend
around pin.
Cotter Pin
Cotter Pin
WARNING:
First ½” after
tting must
be straight
WARNING:
First ½” after
tting must
be straight
A
B
C
D
FLAP CONNECTION
3/16”
Clevis Pin
10-99-22
Flap Connection:
A) Place 1/4”bushing in ap.
B) Slip clevis onto ap.
C) Insert 3/16” pin with head
on spring side.
D) Insert cotter pin and bend
around pin.
Bushing Cable
Pin Flap End
10-99-28
Zip Tie Cable
to Pedal
2x
Install Pedal
A) Mark and drill two 11/32” holes, if needed, for pedal
mounting bolts.
B) Tighten two 5/16” x 1” hex bolts to secure pedal
assembly to mower deck.
GrassFlap.com Phone: (502)594-3546 10
SEL Pedal Location & Cable Routing
Preferred location for SEL pedal assembly.
WARNING:
First
½” after
tting must
be straight
GrassFlap.com Phone: (502)594-3546 11
RE Pedal Location & Cable Routing
WARNING:
First ½” after
be straight
WARNING:
First ½” after
be straight
A
B
C
D
FLAP CONNECTION
3/16”
Clevis Pin
10-99-22
Bushing Cable
Pin Flap End
10-99-28
PEDAL CONNECTION
A
B
C
1/4” Clevis Kit
10-99-21
1/4” Pin
Preferred locations for RE pedal assembly.
Option 1
Option 2
WARNING:
First
½” after
tting must
be straight
Pedal Connection:
A) Place clevis on cable ball
and squarely seat in
bottom of clevis.
B) Insert 1/4” diameter pin.
C) Insert cotter pin and wrap
around pin.
Flap Connection:
A) Place 1/4”bushing in ap.
B) Slip clevis onto ap.
C) Insert 3/16” pin with head
on spring side.
D) Insert cotter pin and wrap
around pin.
2x
Install Pedal
A) Mark and drill two11/32” holes, if needed, for pedal
mounting bolts.
B) Tighten two 5/16” x 1” hex bolts to secure pedal
assembly to mower deck.
Cotter Pin
Cotter Pin
GrassFlap.com Phone: (502)594-3546 12
GrassFlap's Frequently AskedQues�ons
WHAT TO DO IF YOUR CABLE BREAKS
DO NOT REMOVE cable conduit from the mower, this makes it impossible to determine cause of failure.
FIRST ATTEMPT TO DETERMINE THE CAUSE OF THE FAILURE.
1.REVIEW THE CABLE INSTALATION USING THE CABLE INSTALLATION CHECKLIST,look at each item on the list
from the original installa�on andconfirm the cable is s�ll installed properly. If you find the set-up has changed
then most likely this is the cause of the failure.
IF YOU ARE NOT ABLE TO DETERMINE THE CAUSE OF THE FAILURE AND WOULD LIKE HELP DETERMINING IT,
proceed as follows
2.TAKE PICTURES of cable conduit as it is routed on the mower with broken cable wire alongside the conduit,
just as if wire were run in the conduit. Picture must show both the cableandthe conduit in same picture.
Pictures required for warranty claim.
3.CIRCLE BROKEN END OF WIRE in picture from step2,most phones will letyou edit the picture.
4.EMAIL TO,david@grassflap.com
5.INCLUDE ALL ITEMS LISTED BELOW
a. Pictures of broken cable, (from step 2 above),
b. Picture of Completed“Cable Installa�on Checklist”, (from step 1above).
c.Approximate purchase date of current cable.
d. Where was cable purchased and name purchased under
e. Subject line “BROKEN CABLE”
If you need a cable rightaway it is suggested that you purchase one online so it is headed your way while we review
the informa�on.
MY FLAP ONLY OPENS HALFWAY
The flap is designed to open halfway with the pedal full down. Pushing harder will notcause flap to move. The proper
opera�on is to push the pedal down un�l the flap approaches the half open posi�on then at thatpoint pressure on
the pedal should be release to allow the pedal to rise as the flap passes the halfway point.
CAN THE FLAP BE POSITIONED PARTIALLY OPEN?
Yes, the flap can be held in a par�al open posi�on usingthe foot pedal. Simply hold the pedal in the desired posi�on.
One of the nice features of the GrassFlap is the way the pedal operates to open and close the flap without havingto
push on a separate pedal. You are able to push andrelease the pedal in one smooth mo�on to flip it open and the
same mo�on, push andreleasewill the flip it back to the closed posi�on. In order to lock it somewhere between full
open and full closedwould require a second mo�on to lock and release it.
WILL THE FLAP PUSH OPEN?
Given enough pressure it will push open.It is held close with a spring; the same spring also holds the flap in the open
posi�on. By the �me the flap gets pushedopen there is typically enough grass behindit that you are no longer
making a goodcut.
HOW DO I RETURN GRASSFLAP IF I CHANGED MY MIND?
Any product may be returned. Product must be in like new condi�on. Cost of product less shippingwill be refunded.
Return postage is not refundable.
CAN THE DEFLECTOR ANGLE BE MOUNTED TO THE DECK INSTEAD OF THE FLAP?
The deflector angle should travelwith the flap to prevent clippings from blowing straight up as the flap begins to
open.As it first starts to open there is not enough angle to deflect the clippings down so theyend up going both ways
up and down. Without the angle theywill go straight up on onto the operator.Moun�ng the angle to the deck would
only providea good seal when the flap is fully closed.
Safety and Warnings
Thrown objects
Mowing with power equipment involves certain risk including but not limited to thrown objects. Be sure to clean up
the area to be mowed and remove objects that could be thrown by the blades BEFORE you start mowing
Once the grass flap is installed your mower will be equipped with an operator controlled discharge chute (OCDC).
Do not operate the mower if the OCDC is not properly attached. This discharge chute has a variable adjustment
from fully open to fully closed. In the closed position it will serve to keep some of the clipping material under the
mower deck for a longer period of time, in order to enhance the mulching capabilities, as well as function as a
safety shield. The discharge chute should ALWAYS BE IN THE CLOSED POSITION WHEN MOWING WHILE
PEOPLE ARE PRESENT IN THE IMMEDIATE VINCINITY.
Do not allow anyone in the area while mowing. If someone does enter the area, stop mowing immediately until they
leave.
Moving parts
The mower deck has spinning mower blades that can amputate hands and feet. Do not allow anyone near the
mower while it is running! Keep safety devices (guards, shields, and switches) in place and working.
Children
Tragic accidents can occur with children. Do not allow then anywhere near the area of operation. Children are
often attracted to the unit and mowing activity. Never assume that children will remain where you last sat them. If
there is a risk that children may enter the area where you are mowing, have another responsible adult watch them.
General Safety Precautions
1.
Do not mow when children, pets, or others are present. The operator is responsible for the safety of others
within the vicinity of the operation of your mower.
2.
Keep hands, feet, and clothing away from rotating blades or other rotating parts while the engine is
running.
3.
Do not attempt to open or close the flap at the discharge chute while the engine is running, doing so
could result in personal injury including loss of hands, feet or death.
4.
Clear work area of objects (wire, rocks, and debris of any kind) that can be picked up and thrown by the
mower, and possibly damage the equipment or cause personal injury to the operator.
5.
Do not attempt to adjust or repair the mower deck, grass flap, or related components while the engine is
running. You must disengage power to attachments, disengage PTO, set parking brake, set steering
controls to neutral, shut off the engine, and remove the key before making any repairs or adjustments or
attempting any of the following tasks:
a.
Flap connecting linkage adjustment
b.
Flap removal or cleaning
c.
Unclogging the chute
Failure to comply can result in personal injury, loss of limb, or death.
6.
Keep all nuts, bolts, screws, and other fasteners in place and properly secured to be sure
equipment is in safe working condition.
7.
Keep equipment and attachments in good operating condition and keep safety devices, such as guards,
shields and covers in place and working.
8.
Do not operate the mower or attachments if any guards are missing or not functioning.
9.
Stop the mower and attachments, secure the mower, and inspect for damage after striking a foreign
object. Repair any damage before restarting and operating the equipment.
10.
Use personal protective equipment when operating mower of performing maintenance, such as (but not
limited to) protection for eyes, feet, and head. Do not operate or service the mower when barefoot or
wearing open-toed sandals.
11.
Obey all safety decals.
GrassFlap.com Phone: (502)594-3546 13
SAFE OPERATION OF MOWING EQUIPMENT IS THE RESPONSIBILITY OF THE MOWER
OPERATOR! THE GRASS FLAP WHEN CLOSED WILL REDUCE BUT NOT ELIMINATE THE RISK OF
OBJECTS BEING THROWN FROM THE DISCHARGE CHUTE! BE AWARE OF SURRONDINGS AT
ALL TIMES!
WARRANTY
There are no understandings, agreements, representations, or warranties expressed or implied (including
but not limited to any regarding the merchantability or fitness for a particular purpose) not specified herein,
regarding equipment which is the subject of this warranty.
Owner operator Knowledge Responsibility
As a condition of the Grass Flap warranty, the owner operator(s) are fully responsible for having read, and
reasonably understanding the proper operation and care of the Grass Flap unit before attempting to
operate the unit.
Product warranty if for a period of 90 days from date of purchase. Warranty covers defects in workmanship
and materials ONLY.
Limitations of warranty
Proof of purchase including purchase date is required for claim validation. It is the discretion of the
manufacture as to replace or repair a warranted product.
All warranty work must be performed by an authorized Grass Flap servicing dealer ONLY.
This Warranty only covers Grass Flap complete units that have been maintained and operated under
conditions considered normal for turf equipment.
Expressly not covered
a) Damage, defects or deterioration due to normal use, wear, or exposure to the elements.
b) Damage or defects resulting from misuse, neglect, alteration, accident or negligence.
c) Damage or defects resulting from repairs by person(s) other than the manufacturer or a
manufacturer’s representative.
d) Repair or replacements resulting from operation of Grass Flap equipment that has been modified,
or effected with respect to the intended use of the product
e) Repair or replacement as a result of Grass Flap equipment operated in a manner which is not in
accord with the instructions as specified in the operator section or other instructions provided by
Grass Flap.
Grass Flap is not responsible for (nor limited to the following)
f) Travel time, overtime, after hours time or other extraordinary repair charges or charges relating to
repairs or replacements outside of normal business hours at the place of business of the
authorized Grass Flap service dealer.
g) Rental of like or similar equipment during the time of any warranty, or replacement work.
h) Loss, cost or expense relating to transportation of Grass Flap equipment from location of owner
or location where used by owner to or from any authorized Grass Flap dealer
i) Any claims for lost revenue, lost profit or additional cost or expenses incurred as a result of a claim of
breach of warranty.
j) Loss or damage to person or property other than that covered by the terms of this warranty.
k) Losses or damage related to equipment the Grass Flap is mounted on.
l) Any telephone, telegram, travel charges, or attorney’s fees.
Disclaimer
Any and all statements or representations made by seller of this equipment, including those set forth in
any sales literature or made orally by and sales representative are superseded by the terms of this
warranty. There are no representations or warranties, which have been authorized and provided to the
buyer of Grass Flap equipment, other than as set forth in this warranty. Any affirmation of fact or promise
made by Grass Flap or any of its representatives to the buyer which relates to the goods that are the
subject of this warranty shall not be regarded as part of the basis of the bargain and shall not be deemed
to create and express warranty that such goods shall conform to the affirmation or promise
GrassFlap.com Phone: (502)594-3546 14
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