Where can I get additional push pins?? Also disappointed that the Intermatic timer 1101 stopped working 13 months after it was purchased. Just 1 month over warranty. Should last longer than the 4 months it was used...

If clock is rotating on time, next suspect is P47 trippers have worn down. Trippers are made of softer metal so they wear down instead wearing down the on-off lever, and that way the timer lasts longer.
http://waterheatertimer.org/Tork-timers-and-manuals.html#1101
http://www.frontierlighting.com/find.jsp?a=1&ID=,Photo.Cells...Time.Controls,Replacement.Trippers

New replacement Tork 1101 120Volt timer can be purchased on-line at Amazon etc.
Home Depot sells the 120V GE 15306 indoor-outdoor version of Tork 1101 timer.
http://waterheatertimer.org/GE-timers-and-manuals.html#15306
Replacement timer in Intermatic is T101
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

You might need $45 clock motor for for Tork 1101 120Volt.
http://www.frontierlighting.com/product.jsp?part=10431&process=search&show=&&gdftrk=gdfV22514_a_7c834_a_7c3267_a_7c10431

Open following link to identify timer and see replacement clock motor and trippers:
http://waterheatertimer.org/Tork-timers-and-manuals.html#1101

Intermatic crossover shows T101 timer replaces 120Volt Tork 1101.
Amazon sells new Intermatic timer for $45 with super shipping
http://www.amazon.com/Intermatic-T101-Hour-Dial-Timer/dp/B00002N5FN

Crossover wiring from Tork to Intermatic:
Black wire on Tork L and 1 connect to Intermatic terminal 1
White wires on Tork X connect to Intermatic terminal A
Black wire on Tork 2 connects to Intermatic terminal 2
http://waterheatertimer.org/How-to-wire-T104-Intermatuic-timer.html#T101

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13 years is good run for clock motor. Timer will last longer than clock motor.
Open following link to identify timer
http://waterheatertimer.org/Tork-timers-and-manuals.html#1101
Tork 1104 has 240Volt clock motor

Frontier lighting sells the >> 120V Tork motor: List price 40.33/ your price 45.49
So 120Volt replacement motor costs as much as new replacement timer
http://www.frontierlighting.com/product.jsp?part=10431&process=search&show=&&gdftrk=gdfV22514_a_7c834_a_7c3267_a_7c10431

Intermatic replacement is240 volt T104 timer for $49.62 with 'free' shipping:
Also Intermatic trippers and clock motors are cheap and easily available
http://www.amazon.com/Intermatic-T104-208-277-Volt-Mechanical-Switch/dp/B000BQOX88
Crossover wiring from 1104 to T104.
Tork L goes to Intermatic 1
Tork 1 goes to Intermatic 3
Tork x goes to Intermatic 2
Tork 2 goes to Intermatic 4
Intermatic A is not used unless you have neutral wire or 277V
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html

GE sells the same 240Volt Tork timer under GE model 15307 in indoor-outdoor enclosure available at Home Depot for $59.00. Year 2011, GE does not pay US income tax, but takes US profits and pays tax in foreign nations. No replacement clock motor is available, but crossover wiring is same.
http://waterheatertimer.org/GE-timers-and-manuals.html#15306

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It sounds like the clock motor has gone bad, which is why the trippers cause the wheel to stall.
Frontier lighting sells the clock motor for 43$:
http://www.frontierlighting.com/product.jsp?part=10431&process=search&show=&ID=,Photo.Cells...Time.Controls,Replacement.Motors

Why one of the timers works fine and the other habitually fails is a mystery. You might use a circuit analyzer or test the load. Try switching loads to other timer.

Since the Tork 1101 clock motor sells for $43, I suggest T-101 as crossover product in Intermatic.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101
Amazon sells T101 for $42.99
http://www.amazon.com/Intermatic-T101-Hour-Dial-Timer
T-101R raintight sells at Lowes
http://www.lowes.com/pd_29405-251-T101RD89_0_?productId=1082111&Ntt=timers&Ntk=i_products

T-103 has 120V clock motor with 5 terminals A 1 2 3 4
Tork 1101 has 120V clock motor with 4 terminals L 1 X 2

T103 is DPST and can control one-or-two 120Volt loads, or one-or-two 240Volt loads.
Tork 1101 is SPST can control one 120Volt load

Common ground between these timers one 120 Volt load
Changeover for one 120 Volt load:
White wires T103 terminal A go to Tork terminal X
Black wire T103 terminal 1 goes Tork terminals L and 1 (there is brass connector plate that connects L and 1 - if connector is missing, jumper between L and 1)
Black wire on T103 terminal 2 goes Tork terminal 2

If Load requirement is greater than T1101, Grainger sells T103 clock motor for $16
http://www.grainger.com/Grainger/INTERMATIC-Time-Clock-Motor-1PNK1?Pid=search
http://www.grainger.com/Grainger/timer-accessories/timers/electrical/ecatalog/N-8hi

How to wire T103
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T103
T1101 wiring manual
http://waterheatertimer.org/pdf/110111021103WIRING.pdf

R88 series timers at Intermatic.
Click on model number to see manual:
http://www.intermatic.com/products/timers/mechanical%20time%20switches/sprinkler%20irrigation%20timers.aspx

Add a comment if you have different timer

At fixya, we're not supposed to copy-paste from manual, but manual says information clearly.
If timer has the day-skipper wheel located lower left of large yellow dial:
Not every timer has day-skipper wheel, in which case timer works same for each day.
TO SKIP DAYS: Turn black skipper wheel COUNTER-CLOCKWISE
until today's day is in front of "14" arrow. Press pins DOWN on days
of NO watering. The skipper wheel must have all pins UP for daily
watering.

Additional instructions:
1. TO SET FIRST ZONE: For watering, push gold pin into slot on yellow
dial at desired ON time. For each 12 minutes of additional watering
add one pin WITHOUT skipping a slot.
2. TO CHANGE ZONES: Leave one blank slot on yellow dial after ON
line (gold pin), and valve will automatically advance to next zone.
3. TO SET ADDITIONAL ZONES: Repeat steps 1 and 2. REMEMBER
to leave blank space between zones
4. TO SET TIME OF DAY: Turn yellow dial CLOCKWISE, until correct
line is at end of silver time pointer. Do NOT turn silver pointer.
5. TO SKIP DAYS: Turn black skipper wheel COUNTER-CLOCKWISE
until today's day is in front of "14" arrow. Press pins DOWN on days
of NO watering. The skipper wheel must have all pins UP for daily
watering.
6. PUT SELECTOR SWITCH IN AUTO: This switch can be used to turn
the system ON or OFF for manual operation without affecting the set
program.

According to Intermatic conversion chart, Tork 1191 is same as Tork 1101.

Link to 1101 .pdf
Link to Tork manuals

Tork 1101 is dial-type mechanical timer. Dark pins turn OFF. Light pins turn ON.

Clock motor is 120V
Hot black wire from breaker connects to pole L
Neutral white wire from breaker connects to pole X
Removable bridge connects poles L &1 together
If bridge is gone, Hot from breaker must also connect to pole 1
Black wire to Load connects to pole 2
White wire to Load connects to pole X

Timer can control 240V Load if removable bridge between poles L and 1 is taken out.
Timer clock is still 120V: so 120V Hot still connects to pole L and neutral from breaker connect to poles X
240 V circuit has two hot lines: Hot line 1 and Hot line 2
240 volt Hot line 1 from breaker connects to pole 1
240 volt Hot line 1 to load connects to pole 2
240V Hot line 2 goes directly to Load and does not connect to any pole

1) Tork P47 tripper is correct tripper for 1101 timer.
Trippers are brass-colored and black-colored.
If they do not fit timer dial you might need new timer.
http://www.frontierlighting.com/find.jsp?a=1&ID=,Photo.Cells...Time.Controls,Replacement.Trippers

2) Buy new 120Volt indoor/non-weathertight Tork T1011
To identify timer for sure:
http://waterheatertimer.org/Tork-timers-and-manuals.html

3) Google search Tork 1101 shows timer cost $83

4) Intermatic cross reference shows replacement is T-101 indoor/non-weathertight
Amaxon sells T101 for 43$:
http://www.amazon.com/Intermatic-T101-Hour-Dial-Timer/dp/B00002N5FN

5) Raintight/outdoor: Aplus and Lowes sell raintight outdoor T-101R for $71
http://www.lowes.com/pd_29405-251-T101RD89_0_

http://www.aplussupply.com/intermatic/timer.htm

6) Cross over wiring.
Tork terminal X is T101 terminal A
Tork terminal 1&L are T101 terminal 1
Tork terminal 2 is T101 terminal 2

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You need to remove all timer on pins. then push on/off switch to off and it won't turn on by itself.

go to intermatic site
www.intermatic an search for irrigation timers. scroll to bottom of page and you'll see whats listed below


* Includes rain sensor input terminals- rain sensor not supplied.
** Includes 24 volt - 20 VA transformer.
For additional trippers (12 per pack), order No. 156T1950A.
For additional skipper pins (14 per pack), order No. 156T1954A.